Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5403125 | Method and apparatus for providing underground barrier | — | 1995-04-04 |
| 5129761 | Pipe placement method and apparatus | Norman Hooper | 1992-07-14 |
| 4832530 | Apparatus and method for joining pipe sections underwater | Norman Hooper, Kent Werle | 1989-05-23 |