Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6468024 | Apparatus and method for orienting and stacking generally planar workpieces | Charles W. Bishop | 2002-10-22 |
| 4512243 | Ventilator having insert for controlling moisture and method of making same | James W. Ballard | 1985-04-23 |
| RE31549 | One-piece roof vent device and methods of constructing and utilizing same | James W. Ballard | 1984-04-10 |
| 4370876 | Methods of constructing a one-piece roof vent device | James W. Ballard | 1983-02-01 |
| 4214513 | One-piece roof vent device and methods of constructing and utilizing same | James W. Ballard | 1980-07-29 |
| D254804 | Roof vent | James W. Ballard | 1980-04-22 |