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发明名称
CONTINUOUS BRIGHT FRAME CONTINUOUS VARIABLE MAGNIFICATION VIEWFINDER
摘要
申请公布号
JPS54161931(A)
申请公布日期
1979.12.22
申请号
JP19780070387
申请日期
1978.06.13
申请人
COPAL CO LTD
发明人
UEDA MITSUAKI;ARAI KIYOYUKI
分类号
G03B13/10
主分类号
G03B13/10
代理机构
代理人
主权项
地址
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