Baseball practice device,申请号US19610146121-传众专利搜索

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发明名称	Baseball practice device
摘要
申请公布号	US3086775(A)	申请公布日期	1963.04.23
申请号	US19610146121	申请日期	1961.10.19
申请人	ALBERT JAMES L	发明人	ALBERT JAMES L.
分类号	A63B69/00	主分类号	A63B69/00
代理机构		代理人
主权项
地址

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