Automatic phonograph record selecting mechanism,申请号US19390299744-传众专利搜索

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发明名称	Automatic phonograph record selecting mechanism
摘要
申请公布号	US2240609(A)	申请公布日期	1941.05.06
申请号	US19390299744	申请日期	1939.10.16
申请人	PHONOGRAPH ADVERTISING SERVICE, INCORPORATED	发明人	CUMMINGS NORBERT C.
分类号	G07F17/30	主分类号	G07F17/30
代理机构		代理人
主权项
地址

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