Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6761456 | Laser presentation system using a laser pointer | Akinori Hamana, Takashi Nagashima, Junichi Yokoyama | 2004-07-13 |
| 6698897 | Presentation system using laser pointer | Akinori Hamana | 2004-03-02 |