Improvements in and relating to dark slides for photographic apparatus,申请号GB19330027812-传众专利搜索

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发明名称	Improvements in and relating to dark slides for photographic apparatus
摘要
申请公布号	GB427022(A)	申请公布日期	1935.04.09
申请号	GB19330027812	申请日期	1933.10.09
申请人	WILLY SALCHOW	发明人
分类号	G03B27/58	主分类号	G03B27/58
代理机构		代理人
主权项
地址

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