Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D274854 | Mop carrier | Masanobu Nishiyama, Fusao Kanazawa, Hisaji Tanaka | 1984-07-24 |
| D274855 | Mop | Masanobu Nishiyama, Fusao Kanazawa, Hisaji Tanaka | 1984-07-24 |
| 4392269 | Mop carrier | Masanobu Nishiyama, Fusao Kanazawa, Hisaji Tanaka | 1983-07-12 |