Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6059052 | External pipe wiping apparatus and method of pulling and wiping a pipe string | — | 2000-05-09 |
| 5836386 | Wiping element for a drill pipe ID wiping device | — | 1998-11-17 |
| 5732774 | Drill wiper assembly | — | 1998-03-31 |
| RE32085 | Tubular member interior wiper | — | 1986-02-25 |
| 4287948 | Tubular member interior wiper | — | 1981-09-08 |
| 4230190 | Blow out preventer handling system | David C. Guinn, John P. Thomas | 1980-10-28 |