Patent Explorer
Browse, filter, and analyze 10 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US4092680A | Apparatus for indicating the farthest advance position of a bi-directionally movable medium | Dictaphone Corp | Expired / Lapsed | 1976-09-10 | 1978-05-30 | 1996-09-10 | 0.0 yrs | 10 | |
| US4051540A | Instruction indicating apparatus for a record and/or playback device | Dictaphone Corp | Expired / Lapsed | 1976-04-20 | 1977-09-27 | 1996-04-20 | 0.0 yrs | 14 | |
| US2992060A | Correction and end-of-letter marker for dictating machine | Dictaphone Corp | Expired / Lapsed | 1956-09-04 | 1961-07-11 | 1976-09-04 | 0.0 yrs | 0 | |
| US2820639A | Monitors for commercial phonographs | Dictaphone Corp | Expired / Lapsed | 1954-06-10 | 1958-01-21 | 1974-06-10 | 0.0 yrs | 0 | |
| US2444676A | Sound recording and reproducing control system | Dictaphone Corp | Expired / Lapsed | 1944-12-29 | 1948-07-06 | 1964-12-29 | 0.0 yrs | 0 | |
| US2238863A | Translation device for phonographs | Dictaphone Corp | Expired / Lapsed | 1939-03-21 | 1941-04-15 | 1959-03-21 | 0.0 yrs | 0 | |
| US2201118A | Transmission of power | Dictaphone Corp | Expired / Lapsed | 1938-04-06 | 1940-05-14 | 1958-04-06 | 0.0 yrs | 0 | |
| US2072064A | Correction device for dictating machines | Dictaphone Corp | Expired / Lapsed | 1930-05-08 | 1937-02-23 | 1950-05-08 | 0.0 yrs | 0 | |
| US1785409A | Record-resurfacing machine | Dictaphone Corp | Expired / Lapsed | 1927-07-23 | 1930-12-16 | 1947-07-23 | 0.0 yrs | 0 | |
| US1754454A | Phonograph stop | Dictaphone Corp | Expired / Lapsed | 1926-05-01 | 1930-04-15 | 1946-05-01 | 0.0 yrs | 0 |