Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4209664 | Carrier frequency sound transmission system | — | 1980-06-24 |
HH
Hans Hochrath
Overall (All Time): #4,114,588 of 4,157,543Top 100%
1
Patents All Time