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发明名称
Photographic viewfinder of the albadanewton type
摘要
申请公布号
US3024691(A)
申请公布日期
1962.03.13
申请号
US19580740250
申请日期
1958.06.06
申请人
VOIGTLANDER A. G.
发明人
PAPKE FRIEDRICH
分类号
G02B23/14
主分类号
G02B23/14
代理机构
代理人
主权项
地址
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