Issued Patents All Time
Showing 26–50 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5095978 | Hydraulically operated permanent type well packer assembly | Aubrey C. Mills | 1992-03-17 |
| 5027129 | Gimballed antenna | Henry S. More, Louis H. Rorden | 1991-06-25 |
| 4926188 | Gimballed antenna | Henry S. More, Louis H. Rorden | 1990-05-15 |
| 4852648 | Well installation in which electrical current is supplied for a source at the wellhead to an electrically responsive device located a substantial distance below the wellhead | Daniel O. Dewey | 1989-08-01 |
| 4783046 | Pneumatic valve actuators | Terry Young | 1988-11-08 |
| 4776397 | Tool for lowering into centered position within a well bore | — | 1988-10-11 |
| 4768594 | Valves | — | 1988-09-06 |
| 4745971 | Multiple string well packer | — | 1988-05-24 |
| 4726421 | Latching devices | John P. Hare | 1988-02-23 |
| 4691893 | Fail safe gate valves and actuators therefor | Gonzalo Vazquez | 1987-09-08 |
| 4641707 | Well apparatus | — | 1987-02-10 |
| 4640350 | Kickover tool | John P. Hare | 1987-02-03 |
| 4632406 | Apparatus in which an annular ring is carried within a groove about one member for slidably engaging the cylindrical surface of another member | — | 1986-12-30 |
| 4628998 | Well apparatus | — | 1986-12-16 |
| 4605064 | Well apparatus | — | 1986-08-12 |
| 4591197 | Wire line running and/or pulling tool | — | 1986-05-27 |
| 4582135 | Well packers | — | 1986-04-15 |
| 4542792 | Method and removable auxiliary apparatus for permanently locking open a well flow control device | — | 1985-09-24 |
| 4540047 | Flow controlling apparatus | — | 1985-09-10 |
| 4522259 | Well apparatus | — | 1985-06-11 |
| 4519575 | Valves and valve actuators | Daniel O. Dewey | 1985-05-28 |
| 4505332 | Well packers | Aubrey C. Mills | 1985-03-19 |
| 4505331 | Side pocket mandrel | — | 1985-03-19 |
| 4488596 | Locking apparatus for use in a subterranean well | — | 1984-12-18 |
| 4488595 | Well tool having a slip assembly | — | 1984-12-18 |