Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9816891 | Gas internal combustion engine gas leak checking device and method for same | Michiyasu Ishida | 2017-11-14 |
| 9777692 | Exhaust purge device for gas internal combustion engine | Hideki Nishio, Michiyasu Ishida | 2017-10-03 |