Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4942915 | Process for production of a hollow casting | Ulrich Quack | 1990-07-24 |
| 4927688 | Cast-iron element | Rudi Hass, Georg Jansen | 1990-05-22 |
| 4832107 | Method of producing a cast-iron element | Rudi Hass, Georg Jansen | 1989-05-23 |