Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5181844 | Rotary vane pump with carbon/carbon vanes | Francis A. Schwind, David B. Sawyer | 1993-01-26 |
| 4820140 | Self-lubricating rotary vane pump | — | 1989-04-11 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5181844 | Rotary vane pump with carbon/carbon vanes | Francis A. Schwind, David B. Sawyer | 1993-01-26 |
| 4820140 | Self-lubricating rotary vane pump | — | 1989-04-11 |