Holder for photographic color filters, or extension lenses,申请号GB19300004047-传众专利搜索

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发明名称	Holder for photographic color filters, or extension lenses
摘要
申请公布号	GB340836(A)	申请公布日期	1931.01.08
申请号	GB19300004047	申请日期	1930.02.06
申请人	CARL NEITHOLD AKTIENGESELLSCHAFT	发明人
分类号	G03B17/12	主分类号	G03B17/12
代理机构		代理人
主权项
地址

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