Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D318044 | Protector for an ignition plug of a combustion engine | — | 1991-07-09 |
| 5026294 | Ignition plug socket structure | Masahiro Hisatomi, Yoshihiro Togasaki | 1991-06-25 |
| 4993961 | Ignition plug socket | Masahiro Hisatomi | 1991-02-19 |