Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877381 | Compressor shaft collar through port for pressure equalization between fluid pockets | Hubert Richardson, Jr. | 1989-10-31 |
| 4875840 | Compressor lubrication system with vent | Hubert Richardson, Jr., Thomas R. Barito | 1989-10-24 |