American Air Filter Co Inc
American AActive Patents
0
Total Holdings
24
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3774377A | Filter assembly with replaceable filter element | Expired / Lapsed | 1972-04-21 | 1973-11-27 | 7 | Details |
| US3659719A | Filter frame construction | Expired / Lapsed | 1970-12-07 | 1972-05-02 | 5 | Details |
| US3541767A | Gas filter bag structure | Expired / Lapsed | 1969-04-21 | 1970-11-24 | 0 | Details |
| US3402654A | Ventilation control | Expired / Lapsed | 1966-05-04 | 1968-09-24 | 0 | Details |
| US3289394A | Filter support arrangement | Expired / Lapsed | 1964-11-12 | 1966-12-06 | 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 |
| US3208331A | Rivet device | Expired / Lapsed | 1962-08-31 | 1965-09-28 | 2 | Details |
| US3193000A | Unit ventilator | Expired / Lapsed | 1961-11-10 | 1965-07-06 | 2 | Details |
| US3099547A | Pocket-type filters | Expired / Lapsed | 1960-09-19 | 1963-07-30 | 2 | Details |
| US3072513A | Filamentous mat and method for making same | Expired / Lapsed | 1960-03-30 | 1963-01-08 | 2 | Details |
| US3063682A | Heat exchange unit | Expired / Lapsed | 1960-08-15 | 1962-11-13 | 0 | Details |
| US2979265A | Room ventilating method and apparatus | Expired / Lapsed | 1956-12-31 | 1961-04-11 | 0 | Details |
| US2935262A | Damper operated gas valve for unit ventilator | Expired / Lapsed | 1956-09-12 | 1960-05-03 | 0 | Details |
| US2881859A | Atmospheric lint condenser | Expired / Lapsed | 1953-01-04 | 1959-04-14 | 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 |
| US2297601A | Electric gas cleaner | Expired / Lapsed | 1940-09-03 | 1942-09-29 | 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 |