Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458032 | Three-dimensional puzzle game device and recording medium for three-dimensional puzzle game | — | 2002-10-01 |
| 6398641 | Puzzle game apparatus and storage medium therefore | Kenichi Nakamura | 2002-06-04 |