Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886499 | Portable injection appliance | Hans Steffen, Christian Surber | 1989-12-12 |
GC
Giorgio Cirelli
Overall (1989): #110,791 of 140,708Top 80%
1
Patents 1989