OPTICAL CONDENSING SYSTEM WITH VARIABLE EFFECTIVE FOCAL LENGTH,申请号USD3609012-传众专利搜索

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发明名称	OPTICAL CONDENSING SYSTEM WITH VARIABLE EFFECTIVE FOCAL LENGTH
摘要
申请公布号	US3609012(A)	申请公布日期	1971.09.28
申请号	USD3609012	申请日期	1969.10.06
申请人	SPINDLER & SAUPPE INC.	发明人	CHAN STREET
分类号	G02B1/00;G02B13/18;G02B15/02;G02B19/00;(IPC1-7):G02B3/04	主分类号	G02B1/00
代理机构		代理人
主权项
地址

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