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经营范围
发明名称
Electrical measuring apparatus
摘要
申请公布号
US2146073(A)
申请公布日期
1939.02.07
申请号
US19370121901
申请日期
1937.01.22
申请人
THE OHIO BRASS COMPANY
发明人
JENNENS WALTER S.;JR. CHARLES J. MILLER,
分类号
G01N27/24
主分类号
G01N27/24
代理机构
代理人
主权项
地址
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