Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673947 | Device for butt joining of ducts for carrying gaseous medium and having a rectangular or square cross section | — | 1997-10-07 |
| 5165736 | Corner profile for coupling channel members | — | 1992-11-24 |
| 4989314 | Method for preparing a corner profile fit for butting connection of closed channels | — | 1991-02-05 |