发明名称 Basketball practice assembly
摘要 A basketball practice assembly that may be removably secured to a back board supported hoop in a desired position to assist a player in improving his ability to make successful free throws or side shots. The practice assembly is of such design that two of them may be oppositely positioned on side portions of a basketball hoop to permit two players to simultaneously practice side shots.
申请公布号 US4226416(A) 申请公布日期 1980.10.07
申请号 US19790047286 申请日期 1979.06.11
申请人 CALLANAN, ROBERT F. 发明人 CALLANAN, ROBERT F.
分类号 A63B63/08;(IPC1-7):A63B63/08 主分类号 A63B63/08
代理机构 代理人
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