Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804194 | Mechanical seal lubrication improvement | Larry A. Hufford, Robert S. Wentworth | 1989-02-14 |
| 4744569 | Bellows mechanical seal with inactive diaphragms | Robert S. Wentworth | 1988-05-17 |