Perfectionnements apportés aux projecteurs,申请号FRD685940-传众专利搜索

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发明名称	Perfectionnements apportés aux projecteurs
摘要
申请公布号	FR685940(A)	申请公布日期	1930.07.18
申请号	FRD685940	申请日期	1929.12.03
申请人		发明人	GRBEEL STEPHEN
分类号	F21V7/00;F21V19/02	主分类号	F21V7/00
代理机构		代理人
主权项
地址

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