Parquet; Donald James
Patent Applications and Registrations
Patent applications and USPTO patent grants for Parquet; Donald James.The latest application filed is for "automatic hydraulic shut-off system".
- Parquet; Donald James - Burlington IA
- Parquet; Donald James - Waterloo IA
| Patent | Date |
|---|---|
| Automatic hydraulic shut-off system Grant 4,063,489 - Parquet , et al. December 20, 1 | 1977-12-20 |
| Dual oil filter automatic switching system Grant 4,033,870 - Parquet , et al. July 5, 1 | 1977-07-05 |
| Accumulator warning system Grant 4,014,213 - Parquet March 29, 1 | 1977-03-29 |
| Hydrostatic transmission Grant 3,913,453 - Parquet October 21, 1 | 1975-10-21 |
| Spool Valve Lands Having Spherically-curved Sealing Surfaces Grant 3,756,280 - Parquet September 4, 1 | 1973-09-04 |
| Variable Pressure Hydraulic System Grant 3,754,400 - Parquet August 28, 1 | 1973-08-28 |
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