Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5898763 | Equipment for facsimile call service of telephone exchange | Fusao Azuma, Noriko Kawamura, Makoto Hibara | 1999-04-27 |
| 4952935 | Radiowave absorber and its manufacturing process | Shinnosuke Sawa, Shunichi Kumaoka | 1990-08-28 |