Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4273798 | Process for coating metal tubes with plastic materials | — | 1981-06-16 |
| 4258505 | Method of and apparatus for the surface cleaning of workpieces | Per O. Aalrust | 1981-03-31 |
| 4182782 | Method of a coating on the outside surface of a metal pipe | — | 1980-01-08 |