Dispositif de mise au foyer dans un projecteur du filament de la lampe,申请号FRD976009-传众专利搜索

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发明名称	Dispositif de mise au foyer dans un projecteur du filament de la lampe
摘要
申请公布号	FR976009(A)	申请公布日期	1951.03.13
申请号	FRD976009	申请日期	1948.09.28
申请人	MAISON BREGUET	发明人
分类号	F21V19/02	主分类号	F21V19/02
代理机构		代理人
主权项
地址

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