Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857383 | Synthetic substrate with adhesive metal layer | Johann Greschner, Hans-Joachim Trumpp | 1989-08-15 |
FS
Friedrich W. Schwerdt
Overall (1989): #114,046 of 140,708Top 85%
1
Patents 1989