Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810652 | Cell growth harvester for roller bottles | — | 1989-03-07 |
DW
Donald J. Witt
Overall (1989): #118,751 of 140,708Top 85%
1
Patents 1989