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发明名称
Zoom lens
摘要
申请公布号
US3044356(A)
申请公布日期
1962.07.17
申请号
US19610112840
申请日期
1961.05.26
申请人
BELL & HOWELL COMPANY
发明人
COX ARTHUR;JOHNSON WALTER J.
分类号
G02B15/14
主分类号
G02B15/14
代理机构
代理人
主权项
地址
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