Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5060916 | Plunger piston system | B. Hubert Koschinat | 1991-10-29 |
| 4890823 | Plunger piston system with separate plastic plunger piston and supporting member | B. Hubert Koschinat | 1990-01-02 |