Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4790385 | Method and apparatus for perforating subsurface earth formations | William A. McPhee | 1988-12-13 |
| 4765409 | Automatic separation device for use with wireline conveyed perforating gun | William A. McPhee | 1988-08-23 |
| 4738319 | Apparatus and method for use in subsurface oil and gas well perforating device | George R. Bartges | 1988-04-19 |
| 4650009 | Apparatus and method for use in subsurface oil and gas well perforating device | George R. Bartges | 1987-03-17 |
| 4629009 | Method and apparatus for firing borehole perforating apparatus | Paul E. Whiting | 1986-12-16 |
| 4523650 | Explosive safe/arm system for oil well perforating guns | Steven D. Sehnert, William A. McPhee | 1985-06-18 |
| 4491185 | Method and apparatus for perforating subsurface earth formations | — | 1985-01-01 |