Patent Explorer
Browse, filter, and analyze 3 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2679090A | Method of making filters | Farr Co | Expired / Lapsed | 1949-08-30 | 1954-05-25 | 1969-08-30 | 0.0 yrs | 0 | |
| US2633929A | Apparatus for filtering air | Farr Co | Expired / Lapsed | 1948-08-24 | 1953-04-07 | 1968-08-24 | 0.0 yrs | 0 | |
| US2537217A | Filter unit | Farr Co | Expired / Lapsed | 1946-09-27 | 1951-01-09 | 1966-09-27 | 0.0 yrs | 0 |