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发明名称
Manufacture of electrical rectifiers
摘要
申请公布号
US1980042(A)
申请公布日期
1934.11.06
申请号
US19330690080
申请日期
1933.09.19
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
DOWLING PHILIP H.
分类号
H01L21/16
主分类号
H01L21/16
代理机构
代理人
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