Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594785 | Method of producing ring-back tone in order wire | — | 1997-01-14 |
KK
Kazutoshi Kawamura
Overall (1997): #122,979 of 185,788Top 70%
1
Patents 1997