Holder for photographic color filters,申请号US19300426704-传众专利搜索

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发明名称	Holder for photographic color filters
摘要
申请公布号	US1829867(A)	申请公布日期	1931.11.03
申请号	US19300426704	申请日期	1930.02.07
申请人	FRIEDRICH KOSTER	发明人	KOSTER FRIEDRICH
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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