Ball throwing device,申请号US19540448569-传众专利搜索

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发明名称	Ball throwing device
摘要
申请公布号	US2815743(A)	申请公布日期	1957.12.10
申请号	US19540448569	申请日期	1954.08.09
申请人	BRUNDERMAN MARTIN E	发明人	BRUNDERMAN MARTIN E.
分类号	A63B69/40	主分类号	A63B69/40
代理机构		代理人
主权项
地址

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