Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854153 | Automatic calibration apparatus for a partial gas pressure measuring sensor | Yuichi Miyagawa, Kazuhiro Kuwa, Katsuyuki Kogo | 1989-08-08 |
| D299435 | Thermal recorder | Kazuhiro Kuwa | 1989-01-17 |