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发明名称
Objective
摘要
申请公布号
US2328157(A)
申请公布日期
1943.08.31
申请号
US19400356342
申请日期
1940.09.11
申请人
SPENCER LENS COMPANY
发明人
LUNEBURG RUDOLF K.
分类号
G02B7/02
主分类号
G02B7/02
代理机构
代理人
主权项
地址
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