Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812368 | Process for the preparation of lightweight, planar molded articles | Erwin Zahn, Wolfram Frank | 1989-03-14 |
DS
Dietrich Scherzer
Overall (1989): #120,168 of 140,708Top 90%
1
Patents 1989