Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4658487 | Method for the manufacture of a piston | — | 1987-04-21 |
| 4420140 | Butterfly valve and a method of manufacture of said valve | — | 1983-12-13 |
| 4407483 | Butterfly valve | — | 1983-10-04 |
| 4291863 | Antifriction device for a valve control shaft | — | 1981-09-29 |
| 4235003 | Method of manufacture of a ball valve | — | 1980-11-25 |