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发明名称
Light beam weakener
摘要
申请公布号
US2999414(A)
申请公布日期
1961.09.12
申请号
US19580742550
申请日期
1958.06.17
申请人
AMERICAN CYANAMID COMPANY
发明人
STAMM ROBERT F.;BUTTON PETER A.
分类号
G01N21/51
主分类号
G01N21/51
代理机构
代理人
主权项
地址
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