Improvements in or relating to photographic enlarging apparatus,申请号GB19390000327-传众专利搜索

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发明名称	Improvements in or relating to photographic enlarging apparatus
摘要
申请公布号	GB523556(A)	申请公布日期	1940.07.17
申请号	GB19390000327	申请日期	1939.01.04
申请人	JOHAN STEENBERGEN;OTTO DIEBEL;HUGO FRAUENSTEIN;EMIL ENGLISCH;HERMANN SCHUBERT;CONRAD KOCH	发明人
分类号	G03B27/62	主分类号	G03B27/62
代理机构		代理人
主权项
地址

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