Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7992688 | Door device for an elevator | Kenji Utsunomiya, Masayuki Sugahara | 2011-08-09 |
NI
Naotoshi Ito
Overall (2011): #207,189 of 364,097Top 60%
1
Patents 2011