최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0237296 (1994-05-03) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 21 인용 특허 : 0 |
An exercise device is releasably attached to a wall adjacent to a doorway and includes a spring-biased arcuate lever arm having a resilient pad on one end. A user leans against the pad and moves the lever arm against the force of the spring to exercise his or her abdominal muscles, oblique muscles a
An exercise device comprising: A) a mounting unit including (1) clamp means for releasably attaching said mounting unit to a wall adjacent to a doorway, and (2) a tension spring attached at one end thereof to said clamp means, B) an arcuate lever arm pivotally mounted on said clamp means and having
※ AI-Helper는 부적절한 답변을 할 수 있습니다.