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发明名称
Optical view-finder devices
摘要
申请公布号
US3034394(A)
申请公布日期
1962.05.15
申请号
US19590842052
申请日期
1959.09.24
申请人
BALDA-KAMERAWERK RUDOLF GRUTER
发明人
LANGE KARL HEINZ
分类号
G02B23/14;G03B13/02
主分类号
G02B23/14
代理机构
代理人
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地址
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