Patent Explorer
Browse, filter, and analyze 2 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2392890A | Telephone traffic indicating and recording means | Frontier Telephone of Rochester Inc | Expired / Lapsed | 1944-02-03 | 1946-01-15 | 1964-02-03 | 0.0 yrs | 0 | |
| US2108909A | Telephone system | Frontier Telephone of Rochester Inc | Expired / Lapsed | 1936-05-28 | 1938-02-22 | 1956-05-28 | 0.0 yrs | 0 |