Patent Explorer
Browse, filter, and analyze 3 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2080154A | Air filter | DEV ASSOCIATES Inc | Expired / Lapsed | 1932-12-10 | 1937-05-11 | 1952-12-10 | 0.0 yrs | 0 | |
| US2076305A | Gas filter | DEV ASSOCIATES Inc | Expired / Lapsed | 1935-01-16 | 1937-04-06 | 1955-01-16 | 0.0 yrs | 0 | |
| US2050508A | Gas filter | DEV ASSOCIATES Inc | Expired / Lapsed | 1934-12-11 | 1936-08-11 | 1954-12-11 | 0.0 yrs | 0 |