Bumper switch unit for ball rolling games,申请号US19400345465-传众专利搜索

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发明名称	Bumper switch unit for ball rolling games
摘要
申请公布号	US2319786(A)	申请公布日期	1943.05.25
申请号	US19400345465	申请日期	1940.07.15
申请人	J. H. KEENEY & CO., INC.	发明人	BINKS MELVIN J.
分类号	A63D13/00;A63F9/00	主分类号	A63D13/00
代理机构		代理人
主权项
地址

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