Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649662 | Method and a pipe element for providing a radially outwards directed bead at the end rim of a pipe | Peter Krichau | 1997-07-22 |
| D377829 | Component for a ventilation duct system | — | 1997-02-04 |