Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE30902 | Pressure and temperature compensating hydraulic valve | Robert J. Whelchel | 1982-04-13 |
| 4318621 | Transit concrete mixer with displaceable charging hopper | John O'Dea | 1982-03-09 |