Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888978 | Instrument to measure leakage of steam from a steam trap | Masao Yonemura, Yoshito Yamada | 1989-12-26 |
| 4860782 | Reducing valve equipped with a vapor-liquid separator | Katsuji Fujiwara | 1989-08-29 |