High Vacuum Valve Co: Difference between revisions
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Previously [[Freedman Valve Co]] | Previously [[Freedman Valve Co]] | ||
1930-33 [[Paul Freedman]] was MD | 1930-33 [[Paul Freedman]] was MD of [[Freedman Valve Co]] | ||
1935 Patent to the company and Donovan William Sayers for a portable wireless receiver | 1935 Patent to the company and Donovan William Sayers for a portable wireless receiver | ||
Latest revision as of 10:41, 11 July 2022
of Farringdon Road, London, maker of valves and cathode ray tubes
Previously Freedman Valve Co
1930-33 Paul Freedman was MD of Freedman Valve Co
1935 Patent to the company and Donovan William Sayers for a portable wireless receiver
Name changed to Hivac.
See Also
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