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发明名称
Electric valve circuits
摘要
申请公布号
US2222720(A)
申请公布日期
1940.11.26
申请号
US19390262543
申请日期
1939.03.17
申请人
WILLIAM A. DODGE;GENERAL ELECTRIC COMPANY
发明人
分类号
H02M1/04
主分类号
H02M1/04
代理机构
代理人
主权项
地址
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