Front lens attachment for changing the focal length in two-lens mirror reflex cameras,申请号US19630310801-传众专利搜索

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发明名称	Front lens attachment for changing the focal length in two-lens mirror reflex cameras
摘要
申请公布号	US3319553(A)	申请公布日期	1967.05.16
申请号	US19630310801	申请日期	1963.09.23
申请人	CARL ZEISS-STIFTUNG	发明人	VOGEL HEINZ
分类号	G03B17/14	主分类号	G03B17/14
代理机构		代理人
主权项
地址

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