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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0535831 (1990-06-11) |
발명자 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 24 인용 특허 : 3 |
A step for performing exercises is circular to allow approaches from any direction equally. The step has a base member and a platform member, the platform member being selectively movable with respect to the base. The base has a plurality of grooves, and the platform has a plurality of tongues to be
1. A step for use in exercising, said step including a platform member and a base member for supporting said platform member, said platform member including an upper circular platform onto which one can step for purposes of exercising, a plurality of tongues extending down from said upper platform,
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