Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5044055 | Hydraulically operated spindle carrier clamping mechanism | Richard F. Howarth, W. Edward Johnston | 1991-09-03 |
| 4396199 | Fluid pressure sealing member for a valve | Marshall J. Boyd, Richard C. Hobbs | 1983-08-02 |
| 4353525 | Rotary valve seal | — | 1982-10-12 |
| 4218925 | Differential pressure transmitter with pressure sensor protection | — | 1980-08-26 |