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发明名称
Automatic switch
摘要
申请公布号
US1815989(A)
申请公布日期
1931.07.28
申请号
US19280300656
申请日期
1928.08.20
申请人
EMERY RUESS ROBERT
发明人
RUESS ROBERT EMERY
分类号
H02P7/06
主分类号
H02P7/06
代理机构
代理人
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