Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4297416 | Gold alloy wire for jewelry chains | Kurt Heilmann | 1981-10-27 |
| 4247602 | Silver alloy wire for jewelry chains | Kurt Heilmann | 1981-01-27 |
| 4245561 | Controllable distributing conveying systems | — | 1981-01-20 |