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经营范围
发明名称
Electric valve circuit
摘要
申请公布号
US1937369(A)
申请公布日期
1933.11.28
申请号
US19310566374
申请日期
1931.10.01
申请人
GENERAL ELECTRIC COMPANY
发明人
WILLIS CLODIUS H.
分类号
H02M7/51
主分类号
H02M7/51
代理机构
代理人
主权项
地址
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