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发明名称
Electrical circuits
摘要
申请公布号
US2480681(A)
申请公布日期
1949.08.30
申请号
US19460690455
申请日期
1946.08.14
申请人
RAYTHEON MANUFACTURING COMPANY
发明人
STIEFEL KARL J.
分类号
G01N21/67
主分类号
G01N21/67
代理机构
代理人
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地址
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