Velocity comparing system for film driving apparatus,申请号US19330664784-传众专利搜索

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发明名称	Velocity comparing system for film driving apparatus
摘要
申请公布号	US2017653(A)	申请公布日期	1935.10.15
申请号	US19330664784	申请日期	1933.04.06
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	CLARKE CAROLE A.;ELMER LLOYD A.
分类号	G03B31/02	主分类号	G03B31/02
代理机构		代理人
主权项
地址

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