Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5150304 | Method of making an implantable joint prosthesis | Rutger Berchem | 1992-09-22 |
| 4910093 | Piston blank for a forged piston | Rutger Berchem, Friedhelm Stahlschmidt | 1990-03-20 |