Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1918 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1922 | | | 11 M11 SLD11 WD11 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Soft Triode | 1920 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1920 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Barretter | 1934 | |
| 13U8 B13 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Barretter | 1934 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C3 | Barretter | 1934 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Barretter | 1934 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Barretter | 1934 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Barretter | 1939 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C12 | Barretter | 1948 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C10B | Rectifier HW | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Beam Tetrode | 1956 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pulse Tetrode | | | | 715C CV598 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C1112 | Pulse Tetrode | 1956 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C1133 | Pulse Tetrode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Double Beam Tetrode | 1974 | |
| 2B52 55B/200A 6252 6252 AX9910 CV2799 QQE03/20 QQV03-20A SRS4452 TH2J30-34 TT20 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C1148 | Pulse Tetrode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pulse Tetrode | 1963 | |
| CV6131 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pulse Tetrode | | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pulse Tetrode | | | | CV10404 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C1179 | Pulse Tetrode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C143 | Beam Tetrode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Double Beam Tetrode | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C178A | Double Beam Tetrode | 1955 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C178A/5894 | Double Beam Tetrode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C180 | Double Beam Tetrode | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Cathode-Ray Tube | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Barretter | 1934 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Barretter | 1934 | |
| 13U9 TC2 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Double Diode Triode | 1935 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1922 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C30B | Triode | 1934 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pentode | 1952 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pentode | 1953 | |
| TS49 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Barretter | 1934 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C50B | Pentode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
C50N | Pentode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pentode | | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Barretter | | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Soft Triode | 1912 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAG29 | Photocell | | | | 90AG GA50 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAM2 | Triode | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1929 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Capacitor | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAR2 | Rectifier HW | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAR4 | Rectifier HW | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAR6 | Rectifier HW | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAT14 | Triode | 1957 | |
| VT58 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAT17 | Triode | 1957 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAT20 | Triode | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAT21 | Triode | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAT22 | Triode | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAT26 | Triode | 1955 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAT27 | Triode | 1955 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAT29 | Triode | 1955 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAT3 | Triode | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | | |
| CV2872 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Photocell | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CAV35 | Photocell | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CB215 | Double Triode | 1936 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Double Triode | 1938 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Double Diode Pentode | 1938 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Double Diode Pentode | 1938 | |
| CV1463 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CC3L | Voltage Stabiliser | 1958 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode Hexode | 1940 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CCS1 | Power Tetrode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Double Triode | 1958 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Numeric Indicator | | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE1 | Photocell | | | | 3554 4GSM 50CG 868 CE1 CMG32 G8 GS146 NU.1 PJ23 R59A WL735 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE11 | Photocell | | | | GS118TA R59TA |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE11V | Photocell | | | | 917 CE11V GL917 NU11V R59TAV VS118TA |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE13 | Photocell | | | | GS117ATA NU13 R71TA |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE13V | Photocell | | | | NU13V R71TAV VS117ATA |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE1V | Photocell | | | | CE1V R59AV VS118 WL734 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE2 | Photocell | | | | 4GC 814A GS117A NU2 R71A WL737 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE25 | Photocell | | | | 3530 927 CMG34X GL927 GS47X |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE25V | Photocell | | | | CMV33X NU25V R51AV VS44X |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE2V | Photocell | | | | R71AV VS117A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE30 | Photocell | | | | 930 GL930 GS16SO NU30 R61A R64A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE30V | Photocell | | | | 925 NU30V R61AV R64AV VS16SO |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Photocell | | | | 9104D |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE36 | Photocell | | | | GS44Y NU36 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE36V | Photocell | | | | NU36V VS44Y |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE4 | Photocell | | | | G12 GS116AM R58A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE4V | Photocell | | | | R58AV VS116AM |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CE7 | Photocell | | | | GS126A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1915 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CF7 | Pentode | 1935 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1918 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1918 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1918 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1918 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CG3E | | | | | CV164 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Monoscope | 1966 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CK502AX | Pentode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CK505AX | Pentode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CK512AX | Pentode | 1956 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CK506 | Pentode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CL2 | Pentode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CL30/20P4 | Pentode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pentode | 1940 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pentode | 1938 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pentode | 1938 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Photocell | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMG17 | Photocell | | | | 3533 GS17 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Photocell | | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Photocell | 1952 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMG28 | Photocell | | | | GS49 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMG29 | Photocell | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMG32 | Photocell | | | | 3554 4GSM 50CG 868 CE1 CMG32 G8 GS146 NU.1 PJ23 R59A WL735 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMG33 | Photocell | | | | GS44 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMG33X | Photocell | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMG34 | Photocell | | | | GS47 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMG34X | Photocell | | | | 3530 927 CE25 GL927 GS47X |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Photocell | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMG8 | Photocell | | | | GS26T |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Photocell | | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMV28 | Photocell | | | | VS49 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMV29 | Photocell | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMV29 | Photocell | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMV33 | Photocell | | | | VS44 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMV33X | Photocell | | | | CE25V NU25V R51AV VS44X |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMV34 | Photocell | | | | VS47 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CMV34X | Photocell | | | | VS47X |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CR1 | Rectifier HW | 1932 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CR1100 | Tetrode (Power) | | | | QY5-3000A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CR1101 | Tetrode (Power) | | | | 6181 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CR192 | Triode (Power) | | | | 6166 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CR192A | Triode (Power) | 1970 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CR2 | Rectifier HW | 1934 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Cathode-Ray Tube | 1938 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Cathode-Ray Tube | | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Cathode-Ray Tube | 1939 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pulse Tetrode | | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Rectifier HW | | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Crookes Tube | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CS36A | | | | | CV165 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CST1-6000 | Thyratron | 1952 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CST2-12 | Thyratron | 1954 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-08 | Triode | 1925 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-08+ | AF/Output Triode | 1926 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1927 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-10+ | AF/Output Triode | 1926 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| AF/Output Triode | 1925 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1926 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1925 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1925 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-210HF | Triode | 1929 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-210LF | AF Triode | 1929 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Camera Tube | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-215 | RF Tetrode | 1927 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-215H | RCC Triode | 1927 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-215P | Output Triode | 1927 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-215SG | RF Tetrode | 1927 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-25 | Triode | 1925 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-25B | RF/RCC Triode | 1925 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | 1926 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-2SSD | Gas Filled Detector Triode | 1926 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-410HF | Triode | 1929 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-410LF | AF Triode | 1929 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-4SSD | Gas Filled Detector Triode | 1926 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-610HF | Triode | 1929 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT-610LF | AF Triode | 1929 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Gas Filled Detector Triode | 1926 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CT10-12 | Thyratron | 1958 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Thyratron | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | | |
| CV2200 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Pentode | 1950 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Magnetron | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Thyratron | | |
| CV6241 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CX1159 | Thyratron | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Thyratron | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Rectifier HW | 1939 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CY10 | Rectifier HW | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Rectifier HW | 1939 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Rectifier 2 x HW | 1939 | |
| 13U7 30BG G3060 MCY2 TCY2 UVG51 UY2 VCY2 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CY30/U301 | Rectifier HW | | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Rectifier HW | 1939 | |
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
CY32 | Rectifier 2 x HW | 1939 | | | |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Tetrode | 1931 | | | |
|