Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4772517 | Composite electrode | Helmut Muenstedt | 1988-09-20 |
| 4587037 | Pyrrole polymers as electrical heating elements | Helmut Munstedt, Herbert Naarmann, Johannes Schlag | 1986-05-06 |