发明名称 Bowling ball holder
摘要 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 straps that are detachably connectable to each other and which can be drawin tightly to keep the bodies in the holes and thereby form a handle.
申请公布号 US5145229(A) 申请公布日期 1992.09.08
申请号 US19910774096 申请日期 1991.10.15
申请人 METZGER, ROMAIN 发明人 METZGER, ROMAIN
分类号 A63B47/00 主分类号 A63B47/00
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