Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D319242 | Loudspeaker | — | 1991-08-20 |
| 4482382 | Pouring repair material for mortar or the like wall | Hisayasu Kanayama, Yoshiaki Sasaki, Yoshitaka Sasaoka, Osamu Tokita | 1984-11-13 |