Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5195585 | Wireline retrievable jet cleaning tool | Jack Gammill Clemens, John H. Yonker, Stewart H. Fowler, Jr., Charles C. Cobb | 1993-03-23 | $8,533,000 |
| 5176164 | Flow control valve system | — | 1993-01-05 | $24,263,000 |
| 5172717 | Well control system | John J. Goiffon, Charles M. Pool | 1992-12-22 | $26,953,000 |
| 4630833 | Molded ring seal with end support rings | Ernest P. Fisher, Jr. | 1986-12-23 | $9,994,000 |
| 4483543 | Seals | Ernest P. Fisher, Jr. | 1984-11-20 | $4,934,000 |
| 4440221 | Submergible pump installation | Donald F. Taylor | 1984-04-03 | $5,972,000 |
| 4425965 | Safety system for submersible pump | Russell Irving Bayh, III | 1984-01-17 | $34,261,000 |
| 4363359 | Locking assembly for well devices | Donald F. Taylor | 1982-12-14 | $36,118,000 |
| 4247985 | TFL Caliper | — | 1981-02-03 | $11,189,000 |