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发明名称
Automatic switch
摘要
申请公布号
US1885784(A)
申请公布日期
1932.11.01
申请号
US19310523133
申请日期
1931.03.16
申请人
SIEMENS BROTHERS & COMPANY LIMITED
发明人
TEES JAMES ERRICAL
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
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