Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873913 | Dry roughing pump having a gas film bearing | Peter K. Bertsch | 1989-10-17 |
| 4860543 | Vibration isolation system for a linear reciprocating machine | Graham J. Higham, Ronald N. Morris | 1989-08-29 |