Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860308 | Modem communication system having main and secondary channels | Adriaan Kamerman | 1989-08-22 |
JH
Johannes P. N. Haagh
Overall (1989): #95,173 of 140,708Top 70%
1
Patents 1989