Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889974 | Thin-film heating element | Hans Auding, Heiner Kostlin, Bruno Vitt | 1989-12-26 |
GF
Gunter Frank
Overall (1989): #109,603 of 140,708Top 80%
1
Patents 1989