Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5478612 | Decorative golf ball with magnet insert | Robert Frank Hack | 1995-12-26 |
| 5193998 | Sealing arrangement for heat treatment apparatus | Jens Lindemann, Erhard Netz | 1993-03-16 |
| 5193100 | Apparatus for detecting gaseous discharge in vacuum furnaces | Wilhelm Polhede | 1993-03-09 |
| 4850576 | Heat treatment of materials | Ralf Peter, Wilhelm Polhede | 1989-07-25 |
| 4708190 | Treating metals and/or metallic compounds | Helmut Strzala | 1987-11-24 |