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Gray Manufacturing Co Inc

Gray Manuf

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2375525A	Remotely controlled sound recording and reproducing machine	Expired / Lapsed	1942-09-04	1945-05-08	0	Details
US2362803A	Continuous sound recording and reproducing system	Expired / Lapsed	1942-09-25	1944-11-14	0	Details
US2340606A	Control means for dictation machines	Expired / Lapsed	1942-03-31	1944-02-01	0	Details
US2336777A	Transcription system	Expired / Lapsed	1942-06-18	1943-12-14	0	Details
US2294963A	Variable speed playback for sound machines	Expired / Lapsed	1940-12-21	1942-09-08	0	Details