Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793382 | Assembly for repairing a damaged pipe | — | 1988-12-27 |
| 4754538 | Annular tube-like driver | John Brian Stewart, Bernard de Brunier, Jeffrey W. Simpson | 1988-07-05 |
| 4713870 | Pipe repair sleeve apparatus and method of repairing a damaged pipe | — | 1987-12-22 |
| 4637436 | Annular tube-like driver | John Brian Stewart, Bernard de Brunier, Jeffrey W. Simpson | 1987-01-20 |
| 4559283 | Battery casing | Franz Kruger | 1985-12-17 |
| 4314718 | Tensile ring composite pipe coupling | Harry C. Broyles | 1982-02-09 |
| 4310183 | Composite pipe coupling | — | 1982-01-12 |