Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6223577 | Automated profile control--roll forming | Harold Ujc | 2001-05-01 |
| 4621661 | Method and apparatus for stiffening sections and a mechanical joint for use therewith | — | 1986-11-11 |
| 4605198 | Damper construction | — | 1986-08-12 |
| 4566724 | Duct joint frame | Peter J. Arnoldt | 1986-01-28 |
| 4542923 | Duct jointing system | Frank X. La Crosse | 1985-09-24 |
| 4369953 | Fence constructions and in fence elements therefor | Denis P. Muscat-Tyler | 1983-01-25 |