Film cinématographique sonore,申请号FRD680942-传众专利搜索

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发明名称	Film cinématographique sonore
摘要
申请公布号	FR680942(A)	申请公布日期	1930.05.07
申请号	FRD680942	申请日期	1929.08.28
申请人		发明人	BUSSARD CLAUDE;LANE GILBERT
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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