Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7985932 | Door lock device with safety switch | Takeo Yasui, Masaki Nobuhiro, Takafumi Hidaka | 2011-07-26 |
| 7956300 | Safety holder | Takafumi Hidaka, Masaki Nobuhiro, Takeo Yasui, Masahiro Ishizaki | 2011-06-07 |