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经营范围
发明名称
Optical testing instrument
摘要
申请公布号
US2414871(A)
申请公布日期
1947.01.28
申请号
US19430491325
申请日期
1943.06.18
申请人
AMERICAN OPTICAL COMPANY
发明人
HARPER KENNARD W.
分类号
G01M11/00
主分类号
G01M11/00
代理机构
代理人
主权项
地址
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