Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6352351 | Method and apparatus for inputting coordinates | Tsutomu Ogasahara, Takahiro Ito | 2002-03-05 |
| 6335724 | Method and device for inputting coordinate-position and a display board system | Tsutomu Ogasawara, Takahiro Ito | 2002-01-01 |