Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821654 | Regeneration of bulk materials | Michael Gross | 1989-04-18 |
NB
Norbert Becker
Overall (1989): #73,266 of 140,708Top 55%
1
Patents 1989