Patent Explorer
Browse, filter, and analyze 3 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2007809A | Thermionic switching system | COMMUNICATIONS PATENTS Inc | Expired / Lapsed | 1930-10-04 | 1935-07-09 | 1950-10-04 | 0.0 yrs | 0 | |
| US1956397A | Multiple channel transmission control | COMMUNICATIONS PATENTS Inc | Expired / Lapsed | 1931-02-21 | 1934-04-24 | 1951-02-21 | 0.0 yrs | 0 | |
| US1945952A | Radio range finder | COMMUNICATIONS PATENTS Inc | Expired / Lapsed | 1930-11-08 | 1934-02-06 | 1950-11-08 | 0.0 yrs | 0 |