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| Number | Title | Issue Date |
| 6923723 | Game device and image processing device To provide an image processing device, image processing method, and data processing method for a game device providing novel game features. In a multiple-player game device 1 comprising mutually coupled input mechanisms 31, it is possible for a game to... | 08/02/2005 |
| 5145424 | Human-powered boat propelling equipments A human-powered boat propelling drive is provided for translating occupant's body weight and variable movements into the power for propelling boat. By coupling the propelling drives, a human-powered boat propelling device is provided which can be propelle... | 09/08/1992 |
