Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4964305 | Method and apparatus for gaging pipe threads | — | 1990-10-23 |
| 4726424 | Well apparatus | — | 1988-02-23 |
| 4685521 | Well apparatus | — | 1987-08-11 |
| 4676563 | Apparatus for coupling multi-conduit drill pipes | Harry B. Curlett | 1987-06-30 |
| 4489963 | Pipe joint | George G. Grimmer, James L. Peterson | 1984-12-25 |
| 4473245 | Pipe joint | George G. Grimmer | 1984-09-25 |
| 4458925 | Pipe joint | George G. Grimmer | 1984-07-10 |
| 4433862 | Pipe joint | George G. Grimmer | 1984-02-28 |