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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0774096 (1991-10-15) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 4 인용 특허 : 0 |
A device for lifting, holding carrying, or swinging a bowling ball to practice the arm movement required for bowling. The device includes a pair of cylindrical bodies adapted to be inserted in adjacent finger holes of a bowling ball and which are detachably interconnected by a pair of separate strap
A device for lifting, holding, carrying, and swinging a bowling ball to practice the movement required for bowling, said device being arranged and disposed for rapid attachment to and removal from a conventional bowling ball, having a pair of laterally spaced finger holes, and comprising: (a) a pair
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