Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4656053 | Method for producing orthodontic devices and appliances | Michael Angrick, Ullrich Trautwein | 1987-04-07 |
| 4568558 | Method for producing orthodontic devices and appliances | Michael Angrick, Ullrich Trautwein | 1986-02-04 |