Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795571 | Purification of frozen crystal layers | Bernhard Holzknecht, Hugo Fuchs, Eckhard Hetzel, Peter Thoma | 1989-01-03 |
KW
Klaus Wintermantel
Overall (1989): #86,527 of 140,708Top 65%
1
Patents 1989