Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5413310 | Valve arrangement | — | 1995-05-09 |
| 5375671 | Converter group and pressure converter for use therein | — | 1994-12-27 |
| 5361857 | Pressure converter | — | 1994-11-08 |
| 5224829 | Rotatable valve having upper and lower parts | — | 1993-07-06 |
| 5154395 | Ball valve and actuator for operating valves and the like | — | 1992-10-13 |
| 5112698 | Ceramic coating | Jonas S. Sandved | 1992-05-12 |
| 4988538 | Ceramic coating | Jonas S. Sandved | 1991-01-29 |
| 4921003 | Shut-down valve | — | 1990-05-01 |
| 4901752 | Apparatus for maintenance of ball valve | — | 1990-02-20 |
| 4850505 | Mechanism for locking of a cover againt a flange | — | 1989-07-25 |
| 4727901 | Ball valve | — | 1988-03-01 |