Dictaphone Corp
DictaphoneActive Patents
0
Total Holdings
23
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4860339A | Programmable telephone/dictation terminal and method of ope… | Expired / Lapsed | 1986-08-08 | 1989-08-22 | 62 | Details |
| US4092680A | Apparatus for indicating the farthest advance position of a… | Expired / Lapsed | 1976-09-10 | 1978-05-30 | 10 | Details |
| US4051540A | Instruction indicating apparatus for a record and/or playba… | Expired / Lapsed | 1976-04-20 | 1977-09-27 | 14 | Details |
| US3984644A | Central dictation system with coded constant current levels… | Expired / Lapsed | 1974-12-27 | 1976-10-05 | 32 | Details |
| US3835261A | Privacy and seizure control circuit for a remote station di… | Expired / Lapsed | 1973-01-10 | 1974-09-10 | 12 | Details |
| US3372240A | Time indicating recording and reproducing apparatus | Expired / Lapsed | 1963-10-14 | 1968-03-05 | 0 | Details |
| US3171902A | Apparatus and method for controlling remotely-operated dict… | Expired / Lapsed | 1959-05-27 | 1965-03-02 | 1 | Details |
| US2992060A | Correction and end-of-letter marker for dictating machine | Expired / Lapsed | 1956-09-04 | 1961-07-11 | 0 | Details |
| US2865637A | Sound recording and reproducing apparatus | Expired / Lapsed | 1947-08-07 | 1958-12-23 | 0 | Details |
| US2833860A | Dictation system | Expired / Lapsed | 1956-04-10 | 1958-05-06 | 0 | Details |
| US2820639A | Monitors for commercial phonographs | Expired / Lapsed | 1954-06-10 | 1958-01-21 | 0 | Details |
| US2686676A | Recording progress indicator for magnetic records | Expired / Lapsed | 1949-04-08 | 1954-08-17 | 0 | Details |
| US2534060A | High-speed intelligence recording and reproducing system | Expired / Lapsed | 1946-09-17 | 1950-12-12 | 0 | Details |
| US2464032A | Stylus construction and method | Expired / Lapsed | 1945-03-19 | 1949-03-08 | 0 | Details |
| US2444676A | Sound recording and reproducing control system | Expired / Lapsed | 1944-12-29 | 1948-07-06 | 0 | Details |
| US2432878A | Electronic amplifier control system | Expired / Lapsed | 1945-01-29 | 1947-12-16 | 0 | Details |
| US2409006A | Phonograph | Expired / Lapsed | 1945-02-01 | 1946-10-08 | 0 | Details |
| US2238863A | Translation device for phonographs | Expired / Lapsed | 1939-03-21 | 1941-04-15 | 0 | Details |
| US2219030A | Control system for phonographs | Expired / Lapsed | 1939-11-28 | 1940-10-22 | 0 | Details |
| US2201118A | Transmission of power | Expired / Lapsed | 1938-04-06 | 1940-05-14 | 0 | Details |
| US2072064A | Correction device for dictating machines | Expired / Lapsed | 1930-05-08 | 1937-02-23 | 0 | Details |
| US1785409A | Record-resurfacing machine | Expired / Lapsed | 1927-07-23 | 1930-12-16 | 0 | Details |
| US1754454A | Phonograph stop | Expired / Lapsed | 1926-05-01 | 1930-04-15 | 0 | Details |