Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839521 | Treatment chamber for the photopolymerization of dental plastics | — | 1989-06-13 |
| 4799753 | Terminal for a radiation conductor | Friedrich-Wilhelm Breitbarth, Hans-Jurgen Tiller, Michael Grosch, Albert L. Schmidt, Ralf Janda | 1989-01-24 |