Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6429856 | Coordinate position inputting/detecting device, a method for inputting/detecting the coordinate position, and a display board system | Kunikazu Tsuda, Makoto Tanaka | 2002-08-06 |
| 6421042 | Coordinate position inputting/detecting device, a method for inputting/detecting the coordinate position, and a display board system | Takao Inoue | 2002-07-16 |