Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4283167 | Cooling structure for an oil sealed rotary vacuum pump | Michael Grandinetti | 1981-08-11 |
| 4276005 | Oil flow metering structure for oil sealed mechanical vacuum vane pump | — | 1981-06-30 |
| 4268230 | Gas ballast for oil sealed mechanical vacuum vane pump | — | 1981-05-19 |