Issued Patents All Time
Showing 76–76 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4600809 | Telephone systems | Kaoru Tatsumi, Takao Kishida, Kuniyoshi Marui | 1986-07-15 |
Showing 76–76 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4600809 | Telephone systems | Kaoru Tatsumi, Takao Kishida, Kuniyoshi Marui | 1986-07-15 |