Issued Patents 1982
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4365787 | Pipe string lift system | — | 1982-12-28 |
| 4347675 | Dredging means having means for excluding oversized slender objects | — | 1982-09-07 |
| 4346937 | Dredging apparatus including suction nozzles | Robert M. Donaldson, Ted W. Christian, Glenn E. Miller | 1982-08-31 |
| 4347029 | Pipe transfer system | Robert M. Donaldson, Michael A. Cross, Harold MacPhaiden, Loren D. Skiles, Henry Schauer +1 more | 1982-08-31 |
| 4327505 | Remotely steerable dredge vehicle | Mark H. Hinman | 1982-05-04 |
| 4323216 | Balanced support plates | — | 1982-04-06 |
| 4319782 | Means for controlling feed of particulate material into airlift pipe | — | 1982-03-16 |
| 4319414 | Dredgehead having forward water-deflecting means comprising two transverse elements | Charles S. Garland | 1982-03-16 |
| 4311342 | Dredge head with mechanical and pumping action | — | 1982-01-19 |