Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6895393 | Electronic book distributing system by use of purchase certificate and devices therefor | Toru Numata, Tadashi Kuwabara, Hiroshi Shimizu, Yukinobu Tada, Naoki Yamamoto +6 more | 2005-05-17 |