Improvements in sound film drive mechanisms,申请号GB19470007807-传众专利搜索

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发明名称	Improvements in sound film drive mechanisms
摘要
申请公布号	GB622535(A)	申请公布日期	1949.05.03
申请号	GB19470007807	申请日期	1947.03.21
申请人	WESTERN ELECTRIC COMPANY INCORPORATED	发明人
分类号	G11B15/28	主分类号	G11B15/28
代理机构		代理人
主权项
地址

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