Improvements in optical enlarging apparatus,申请号GB19470012950-传众专利搜索

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发明名称	Improvements in optical enlarging apparatus
摘要
申请公布号	GB638014(A)	申请公布日期	1950.05.31
申请号	GB19470012950	申请日期	1947.05.13
申请人	SOCIETE D'APPLICATIONS GENERALES D'ELECTRICITE ET DE MECANIQUE, S.A.G.E.M.	发明人
分类号	G03B21/20	主分类号	G03B21/20
代理机构		代理人
主权项
地址

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