Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4548041 | Electrically operated valve, piston and cylinder assembly incorporating said valve, and self-contained system including pressurized fluid and hydraulic actuator | — | 1985-10-22 |
| 4535876 | Shock absorber construction | — | 1985-08-20 |
| 4470898 | Polymer compositions for electrical use | Richard J. Penneck | 1984-09-11 |
| 4265344 | Liquid spring with integral plastic body and seal and fabrication method therefor | — | 1981-05-05 |
| 4252692 | Materials having non-linear electrical resistance characteristics | Richard J. Penneck | 1981-02-24 |
| 4182529 | Vehicle diverting energy absorber bumper system | — | 1980-01-08 |