Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5251248 | Telephone network having personal numbers for position-independent | Hiroshi Tokunaga, Noriaki Yoshikawa, Takeshi Hattori, Yoshiyuki Yasuda, Tatsuo Nohara | 1993-10-05 |