Gray Manufacturing Co Inc
Gray ManufActive Patents
0
Total Holdings
7
Patent Holdings
Filter in Explorer →| 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 |
| US2333235A | Dictation recording system | Expired / Lapsed | 1941-11-22 | 1943-11-02 | 0 | Details |
| US2329107A | Remotely controlled dictationsystem | Expired / Lapsed | 1942-06-18 | 1943-09-07 | 0 | Details |
| US2294963A | Variable speed playback for sound machines | Expired / Lapsed | 1940-12-21 | 1942-09-08 | 0 | Details |