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发明名称
Relay
摘要
申请公布号
US1824130(A)
申请公布日期
1931.09.22
申请号
US19290358198
申请日期
1929.04.26
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
FIELD OSCAR S.
分类号
H01H50/46
主分类号
H01H50/46
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