Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4344632 | Fluid pressure sealing ring for a valve | Douglas W. Wilda | 1982-08-17 |
| 4244226 | Distance measuring apparatus and a differential pressure transmitter utilizing the same | Yoel Keiles, William F. Newbold, John L. Searle, Douglas W. Wilda | 1981-01-13 |