Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4305285 | Liquid level detecting and warning device | Hitoshi Kubota, Toshiyuki Takahashi | 1981-12-15 |
| 4301440 | Level detecting device | Hitoshi Kubota, Yoshihiro Hayashida | 1981-11-17 |