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发明名称
Optischer Belichtungsmesser.
摘要
申请公布号
AT141348(B)
申请公布日期
1935.04.10
申请号
ATD141348
申请日期
1933.09.02
申请人
DR. E. MAYER & BENEDIK
发明人
分类号
主分类号
代理机构
代理人
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