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经营范围
发明名称
Telescope eyepiece
摘要
申请公布号
US2862417(A)
申请公布日期
1958.12.02
申请号
US19530393334
申请日期
1953.11.20
申请人
KEUFFEL & ESSER COMPANY
发明人
BAKER ALLISTER L.;HILLMAN CONWAY D.
分类号
G02B25/00
主分类号
G02B25/00
代理机构
代理人
主权项
地址
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