Patent Explorer
Browse, filter, and analyze 6 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3413423A | Special purpose telephone subset | Automatic Electric Laboratories Inc | Expired / Lapsed | 1965-06-30 | 1968-11-26 | 1985-06-30 | 0.0 yrs | 0 | |
| US3050680A | Testing apparatus | Automatic Electric Laboratories Inc | Expired / Lapsed | 1959-11-02 | 1962-08-21 | 1979-11-02 | 0.0 yrs | 0 | |
| US2498899A | Electrical signaling system | Automatic Electric Laboratories Inc | Expired / Lapsed | 1945-08-27 | 1950-02-28 | 1965-08-27 | 0.0 yrs | 0 | |
| US2424452A | Voice frequency and direct current impulse repeating system | Automatic Electric Laboratories Inc | Expired / Lapsed | 1944-12-08 | 1947-07-22 | 1964-12-08 | 0.0 yrs | 0 | |
| US2412258A | Telephone or like system | Automatic Electric Laboratories Inc | Expired / Lapsed | 1943-12-08 | 1946-12-10 | 1963-12-08 | 0.0 yrs | 0 | |
| US2391389A | Telephone system | Automatic Electric Laboratories Inc | Expired / Lapsed | 1944-08-04 | 1945-12-25 | 1964-08-04 | 0.0 yrs | 0 |