Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5662522 | Exhaust vent | — | 1997-09-02 |
| 5460572 | Foundation ventilator | David Waltz | 1995-10-24 |
| D300174 | Gable ventilator | Eark Irwin | 1989-03-07 |
| D298852 | Gable ventilator | Raymond E. Irwin | 1988-12-06 |
| D298853 | Gable ventilator | Raymond E. Irwin | 1988-12-06 |
| D298053 | Gable ventilator | Raymond E. Irwin | 1988-10-11 |
| D277027 | Roof vent | Elwin E. Peirce | 1985-01-01 |
| D277026 | Base of a roof vent | Elwin E. Peirce | 1985-01-01 |
| D277028 | Cap for a roof vent | Elwin E. Peirce | 1985-01-01 |
| D269700 | Ventilator | Elwin E. Peirce | 1983-07-12 |
| D269293 | Ventilator | Elwin E. Peirce | 1983-06-07 |
| D260117 | Ventilator section | Elwin E. Peirce | 1981-08-04 |
| D259736 | Ventilator section | Elwin E. Peirce | 1981-06-30 |
| D258985 | Ventilator section | Elwin E. Peirce | 1981-04-21 |