Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5167260 | Duct core with strengthening tape | Clifford A. Schroeder | 1992-12-01 |
| 4478657 | Method for strengthening duct cores | Clifford A. Schroeder | 1984-10-23 |
| 4266470 | Universal air diffuser | Clifford A. Schroeder, Harry J. Farason, Robert E. Voorhees | 1981-05-12 |