Patent Explorer
Browse, filter, and analyze 3 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2205716A | Unit heater and air conditioner | C A DUNHAM Co | Expired / Lapsed | 1938-02-04 | 1940-06-25 | 1958-02-04 | 0.0 yrs | 0 | |
| US2075487A | Effective temperature thermostat | C A DUNHAM Co | Expired / Lapsed | 1935-03-09 | 1937-03-30 | 1955-03-09 | 0.0 yrs | 0 | |
| US1921172A | Average temperature control mechanism for heating systems | C A DUNHAM Co | Expired / Lapsed | 1932-01-08 | 1933-08-08 | 1952-01-08 | 0.0 yrs | 0 |