Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870680 | Communication apparatus having a communication hold function | Kuniaki Ohtsuka | 1989-09-26 |
SN
Shigeru Nishikawa
Overall (1989): #57,151 of 140,708Top 45%
1
Patents 1989