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发明名称
Supervisory system
摘要
申请公布号
US1948743(A)
申请公布日期
1934.02.27
申请号
US19290389390
申请日期
1929.08.30
申请人
THE NORTH ELECTRIC MANUFACTURING COMPANY
发明人
BOSWAU HANS PAUL
分类号
H01H9/16
主分类号
H01H9/16
代理机构
代理人
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地址
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