Film reel drive and holdback mechanism,申请号US19450597277-传众专利搜索

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发明名称	Film reel drive and holdback mechanism
摘要
申请公布号	US2568790(A)	申请公布日期	1951.09.25
申请号	US19450597277	申请日期	1945.06.02
申请人	RADIO CORPORATION OF AMERICA	发明人	COLLINS MILFORD E.
分类号	G03B21/32	主分类号	G03B21/32
代理机构		代理人
主权项
地址

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