Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4365509 | System and method for determining the well load of a hopper suction dredge | — | 1982-12-28 |
| 4351122 | System for controlling the position of the drag pipe of a dredge | Pieter Van Prooijen | 1982-09-28 |
| 4343102 | Method for controlling the operation of a dredging apparatus | Cornelis De Keizer | 1982-08-10 |