Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809257 | Hierarchical distributed infrared communication system | Fritz Gfeller, Eduard P. Mumprecht | 1989-02-28 |
DG
Dieter Gantenbein
Overall (1989): #120,384 of 140,708Top 90%
1
Patents 1989