Film-control mechanism for synchronized sound and motion pictures,申请号US19270229929-传众专利搜索

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发明名称	Film-control mechanism for synchronized sound and motion pictures
摘要
申请公布号	US1747558(A)	申请公布日期	1930.02.18
申请号	US19270229929	申请日期	1927.10.31
申请人	ROGERS HARRISON W	发明人	ROGERS HARRISON W.
分类号	G03B31/00	主分类号	G03B31/00
代理机构		代理人
主权项
地址

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