Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D688713 | Upper rotating body for an excavator | Hideki Seino, Yasuyuki Oyamada, Masao Nagata, Takaaki Kuroda, Takuzo Kawamura | 2013-08-27 |
| D685394 | Excavator | Masao Nagata, Yasuyuki Oyamada, Hideki Seino, Takaaki Kuroda, Takuzo Kawamura | 2013-07-02 |
| 6729831 | Extremely-small-swing working machine | Takuzo Kawamura, Hiroyuki Ohtsuki, Kazuya Hokimoto, Hisaji Amanuma, Yasuyuki Oyamada | 2004-05-04 |