Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5584603 | Drainage wick inserting device | — | 1996-12-17 |
| 4755080 | Device for inserting a drainage wick into the ground | Nic G. Cortlever | 1988-07-05 |
| 4664560 | Profile to form a watertight screen in the ground and method of disposing the same | — | 1987-05-12 |