Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4898197 | Cleaning of tubes using projectiles | Robert W. Vowles | 1990-02-06 |
| 4724007 | Method of cleaning pipes and tubes by pigging using water hammer shock waves | Robert W. Vowles | 1988-02-09 |
| 4716611 | Apparatus for cleaning pipes, tubes, and the like by launching pigs | — | 1988-01-05 |