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发明名称
Electrical component
摘要
申请公布号
US2445719(A)
申请公布日期
1948.07.20
申请号
US19460658618
申请日期
1946.04.01
申请人
SYLVESTER FREDERICK F
发明人
SYLVESTER FREDERICK F.
分类号
C09B45/14;H03H9/54
主分类号
C09B45/14
代理机构
代理人
主权项
地址
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