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Ferranti Ltd. was established in 1892 by Sebastian Ziani de Ferranti and took the founders name as the company name in 1905. The Ferranti organisation is/was involved in a wide range of electronic manufacture.
Advert from popular Wireless, February 1, 1930.
In the early 1930s Ferranti Ltd entered the radio set business, the valve manufacturing operations commenced in 1933 with a factory in Hollingwood, Lancashire. Other factories followed in later years.
One of the first types of valves the company made was a heptode frequency changer (pentagrid converter) - the heptode had not been made in the UK before.
Reference: 1004.
Advert from Wireless World, September 27, 1935.
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