Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871791 | Permanently plasticized, cellulose-based product | Manfred Siebrecht, Hermann Winter | 1989-10-03 |
KH
Klaus-Dieter Hammer
Overall (1989): #86,712 of 140,708Top 65%
1
Patents 1989