Patents per Year
Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4915426 | Pipe coupling for well casing | — | 1990-04-10 |
| 4735444 | Pipe coupling for well casing | — | 1988-04-05 |
| 4690167 | Fireplug anti-theft apparatus | — | 1987-09-01 |