Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D725251 | Propeller fan | Shingo Hamada, Hiroshi Yoshikawa, Katsumi Shibayama, Katsuhiro Tozuka, Hiroaki Makino | 2015-03-24 |
| D725252 | Propeller fan | Shingo Hamada, Hiroshi Yoshikawa, Katsumi Shibayama, Katsuhiro Tozuka, Hiroaki Makino | 2015-03-24 |