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发明名称
Electric regulation
摘要
申请公布号
US1916975(A)
申请公布日期
1933.07.04
申请号
US19300434542
申请日期
1930.03.10
申请人
HUGO GROB
发明人
GROB HUGO
分类号
H02P9/22
主分类号
H02P9/22
代理机构
代理人
主权项
地址
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