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Hughes Henry and Son Ltd

Hughes Hen

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
GB616794A	Improvements in and relating to means for measuring the dis…	Expired / Lapsed	1945-07-11	—	0	Details
US2544204A	Radar responder beacon	Expired / Lapsed	1949-08-03	1951-03-06	0	Details
US2434057A	Means for indicating the angular displacements of a shaft a…	Expired / Lapsed	1946-02-26	1948-01-06	0	Details
US2350080A	Compressional wave indicator	Expired / Lapsed	1938-11-26	1944-05-30	0	Details
US2167492A	Method of echo sounding and means therefor	Expired / Lapsed	1935-12-14	1939-07-25	0	Details