Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7994970 | Positioning system, position information transmitter, communication terminal, and control method of the positioning system | Takamasa Kawaguchi, Tomoichi Ebata, Yutaka Shimogaki | 2011-08-09 |