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经营范围
发明名称
Intermittent needle entrapment in an automatic exposure control
摘要
申请公布号
US3062111(A)
申请公布日期
1962.11.06
申请号
US19590794966
申请日期
1959.02.24
申请人
BELL & HOWELL COMPANY
发明人
MACMILLIN DAVID M.
分类号
G03B7/12
主分类号
G03B7/12
代理机构
代理人
主权项
地址
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