Cut film holder light trap,申请号US19490119464-传众专利搜索

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发明名称	Cut film holder light trap
摘要
申请公布号	US2635515(A)	申请公布日期	1953.04.21
申请号	US19490119464	申请日期	1949.10.04
申请人	SMITH LELAND I;RAYMOND ENGLE	发明人	SMITH LELAND I.;ENGLE RAYMOND
分类号	G03B17/26	主分类号	G03B17/26
代理机构		代理人
主权项
地址

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