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 |
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국제특허분류(IPC7판) |
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출원번호 | US-0670448 (1991-03-08) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 23 인용 특허 : 0 |
An exercise device has a head-receiving portion adapted to be disposed against the head of a user. Integral with the head-receiving portion is a base that is adapted to be positioned against the neck of the user to brace the head and neck of the user and partially support the weight of the head whil
An abdominal exercise device anatomically structured to support the head and neck of a user comprising: a semi-cylindrical head receiving upper portion which engages only the posterior portion of the user\s head; a lower neck portion adapted to brace the neck of the user; means for disposing said he
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