Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4458934 | Handles for slips used on drilling rigs | Melvin J. Kliewer | 1984-07-10 |
| 4445403 | Power tongs | Melvin J. Kliewer | 1984-05-01 |
| 4415005 | Pipe thread protector device | — | 1983-11-15 |
| 4398566 | Pipe thread protector apparatus | — | 1983-08-16 |
| 4190211 | Reel mounting apparatus | — | 1980-02-26 |