Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6283156 | Expandable O-ring seal, method of sealing and apparatus having such seals | — | 2001-09-04 |
| 6053111 | Surface safe rig environment detonator | — | 2000-04-25 |
| 5503077 | Explosive detonation apparatus | — | 1996-04-02 |
| 5070943 | Apparatus and method for perforating a well | Jerry L. Walker, Bennie Gill | 1991-12-10 |
| 4875413 | Apparatus for perforating wells | Glenn B. Christopher | 1989-10-24 |
| 4817531 | Capsule charge retaining device | Jerry L. Walker, Glenn B. Christopher | 1989-04-04 |
| 4505018 | Underwater stud gun system and method for attaching an article to an underwater structure | John A. Regalbuto, Glenn B. Christopher | 1985-03-19 |