Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5320508 | Rotary pump and rotor-shaft subassembly for use therein | — | 1994-06-14 |
| 5118268 | Trapped volume vent means with restricted flow passages for meshing lobes of roots-type supercharger | Richard T. Crisenbery | 1992-06-02 |