Improvements in or relating to films for sound photography,申请号GB19290023354-传众专利搜索

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发明名称	Improvements in or relating to films for sound photography
摘要
申请公布号	GB331123(A)	申请公布日期	1930.06.26
申请号	GB19290023354	申请日期	1929.07.30
申请人	KODAK LIMITED	发明人
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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