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经营范围
发明名称
Variable magnification afocal lens member
摘要
申请公布号
US3023673(A)
申请公布日期
1962.03.06
申请号
US19580780100
申请日期
1958.12.12
申请人
BELL & HOWELL COMPANY
发明人
COX ARTHUR;LINKE WALTER R.
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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