American Air Filter Co Inc
American AActive Patents
0
Total Holdings
14
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3659719A | Filter frame construction | Expired / Lapsed | 1970-12-07 | 1972-05-02 | 5 | Details |
| US3402654A | Ventilation control | Expired / Lapsed | 1966-05-04 | 1968-09-24 | 0 | Details |
| US3252691A | Gas cleaning apparatus | Expired / Lapsed | 1962-03-30 | 1966-05-24 | 2 | Details |
| US3243943A | Unit filter construction | Expired / Lapsed | 1964-06-15 | 1966-04-05 | 0 | Details |
| US3244442A | Panel latching arrangement | Expired / Lapsed | 1963-10-21 | 1966-04-05 | 1 | Details |
| US3072513A | Filamentous mat and method for making same | Expired / Lapsed | 1960-03-30 | 1963-01-08 | 2 | Details |
| US2979265A | Room ventilating method and apparatus | Expired / Lapsed | 1956-12-31 | 1961-04-11 | 0 | Details |
| US2857017A | Corrugated web filter | Expired / Lapsed | 1955-11-14 | 1958-10-21 | 0 | Details |
| US2798531A | Condensed filamentous mat and method and apparatus for maki… | Expired / Lapsed | 1953-01-06 | 1957-07-09 | 0 | Details |
| US2062649A | Auxiliary air filter frame | Expired / Lapsed | 1934-06-29 | 1936-12-01 | 0 | Details |
| US1895618A | Air filter device | Expired / Lapsed | 1927-10-12 | 1933-01-31 | 0 | Details |
| US1821202A | Renewable capsule filter | Expired / Lapsed | 1927-08-10 | 1931-09-01 | 0 | Details |
| US1816836A | Process for cleaning and coating air filters | Expired / Lapsed | 1927-04-21 | 1931-08-04 | 0 | Details |
| US1807950A | Cleansing system and device for air filters | Expired / Lapsed | 1929-06-13 | 1931-06-02 | 0 | Details |