Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 8332355 | Method and apparatus for generating readable, unique identifiers | Lincoln C. Cannon | 2012-12-11 | $12,430,000 |
| 7827143 | Method and apparatus for generating readable, unique identifiers | Lincoln C. Cannon | 2010-11-02 | $5,112,000 |
| 7748473 | Top drives with shaft multi-seal | Lawrence E. Wells, Preston R. Fox, Cliff Swiontek, Svein Stubstad, Howard Ervin +1 more | 2010-07-06 | $31,640,000 |
| 7487848 | Multi-seal for top drive shaft | Larry Wells, Svein Stubstad, Howard Ervin, James D. Brugman | 2009-02-10 |