Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4342336 | Double-acting inflatable seal | J. Glenn Satterthwaite | 1982-08-03 |
| 4250926 | Closure device with peripheral double acting inflatable seal | J. Glenn Satterthwaite | 1981-02-17 |