Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7980978 | Hoisting and lowering driving engagement multi-row chain | Takeshi Kondo, Tomoyuki Saji, Hiroko Ishida, Masatoshi Sonoda | 2011-07-19 |
| 7921986 | Hoisting and lowering driving engagement multi-row chain | Takahisa Ando, Takeshi Kondo, Michio Oitaka | 2011-04-12 |