Patent Explorer
Browse, filter, and analyze 4 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3231818A | Audio secrecy system for subscription television | Paramount Pictures Corp | Expired / Lapsed | 1961-11-09 | 1966-01-25 | 1981-11-09 | 0.0 yrs | 1 | |
| US3048822A | Multiple station recording system | Paramount Pictures Corp | Expired / Lapsed | 1958-04-28 | 1962-08-07 | 1978-04-28 | 0.0 yrs | 0 | |
| US2952735A | Secrecy system | Paramount Pictures Corp | Expired / Lapsed | 1955-04-18 | 1960-09-13 | 1975-04-18 | 0.0 yrs | 0 | |
| US2918522A | Subscription television distribution system | Paramount Pictures Corp | Expired / Lapsed | 1956-01-03 | 1959-12-22 | 1976-01-03 | 0.0 yrs | 0 |