Fenêtre à ouverture variable destinée à la projection cinématographique à écran de format variable,申请号FRD1128911-传众专利搜索

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发明名称	Fenêtre à ouverture variable destinée à la projection cinématographique à écran de format variable
摘要
申请公布号	FR1128911(A)	申请公布日期	1957.01.14
申请号	FRD1128911	申请日期	1954.11.20
申请人		发明人	WASSER RENE
分类号	G03B21/00	主分类号	G03B21/00
代理机构		代理人
主权项
地址

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