Improvements in kinematograph films having sound records thereon,申请号GB19310013209-传众专利搜索

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发明名称	Improvements in kinematograph films having sound records thereon
摘要
申请公布号	GB377762(A)	申请公布日期	1932.08.04
申请号	GB19310013209	申请日期	1931.05.05
申请人	JOHN EDWARD THORNTON	发明人
分类号	G03C5/14	主分类号	G03C5/14
代理机构		代理人
主权项
地址

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