Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8752653 | Dual ball upper internal blow out preventer valve | Lawrence E. Wells, Arthur William Braman, JR., Preston R. Fox | 2014-06-17 |
| 7287544 | Triple valve blow out preventer | Lawrence E. Wells, David Mason | 2007-10-30 |
| 7121295 | Internal blow out preventer ball and seat | Lawrence E. Wells, David Mason | 2006-10-17 |
| 6994174 | Washpipe assembly | — | 2006-02-07 |
| 6725949 | Washpipe assembly | — | 2004-04-27 |
| 6276450 | Apparatus and method for rapid replacement of upper blowout preventers | — | 2001-08-21 |
| 4423645 | Pipe spinner | Roderick K. Abbott, Joseph Armand Picard | 1984-01-03 |
| 4367056 | Marine platform jacket jack | — | 1983-01-04 |
| 4320915 | Internal elevator | Roderick K. Abbott, Daniel Juhasz | 1982-03-23 |