Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8308199 | Electrical isolation connector for electromagnetic gap sub | Paul L. Camwell, Derek W. Logan, David D. Whalen, Anthony R. Dopf | 2012-11-13 |
| 7900968 | Electrical isolation connector for electromagnetic gap sub | Paul L. Camwell, Derek W. Logan, David D. Whalen, Anthony R. Dopf | 2011-03-08 |
| 6182754 | Helical scraper apparatus for a reciprocating sucker rod | — | 2001-02-06 |
| 5941312 | Method of fabricating a rod guide, and a rod guide/sucker rod combination | — | 1999-08-24 |