Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6687361 | Electronic exchange and key telephone system | Tamotsu Wakabayashi, Masashi Ishida, Nobuhiro Masaki | 2004-02-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6687361 | Electronic exchange and key telephone system | Tamotsu Wakabayashi, Masashi Ishida, Nobuhiro Masaki | 2004-02-03 |