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发明名称
Optical instrument
摘要
申请公布号
US2328603(A)
申请公布日期
1943.09.07
申请号
US19400362720
申请日期
1940.10.25
申请人
SPENCER LENS COMPANY
发明人
BENNETT ALVA H.;ESTEY ROGER S.
分类号
G02B23/00
主分类号
G02B23/00
代理机构
代理人
主权项
地址
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