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发明名称
Fault-indicating means for signal systems
摘要
申请公布号
US2170104(A)
申请公布日期
1939.08.22
申请号
US19360074567
申请日期
1936.04.15
申请人
SIGNAL ENGINEERING & MANUFACTURING COMPANY
发明人
WHEELOCK JOHN H.
分类号
G08B29/10
主分类号
G08B29/10
代理机构
代理人
主权项
地址
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