Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4946175 | Sealing ring for a pipe joint | Uno Andersson | 1990-08-07 |
| 4934716 | Pipe sealing ring and method of manufacturing the same | Sohen Forsberg, Nils-Erik Bohman | 1990-06-19 |
| 4666165 | Sealing ring with portioned locking element | — | 1987-05-19 |
| 4522669 | Combination mould portion and protective element for pipe | Soren Forsberg | 1985-06-11 |
| 4288104 | Pipe section, preferably a concrete pipe section | — | 1981-09-08 |