Improvements in crystal light valve for sound-on-film recording,申请号GB19520012629-传众专利搜索

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发明名称	Improvements in crystal light valve for sound-on-film recording
摘要
申请公布号	GB713226(A)	申请公布日期	1954.08.04
申请号	GB19520012629	申请日期	1952.05.19
申请人	PARAMOUNT PICTURES CORPORATION	发明人
分类号	G11B7/00	主分类号	G11B7/00
代理机构		代理人
主权项
地址

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