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发明名称
Signaling system
摘要
申请公布号
US1760508(A)
申请公布日期
1930.05.27
申请号
US19270223223
申请日期
1927.09.30
申请人
GENERAL ELECTRIC COMPANY
发明人
LUND HANS;LAUB HANS;HIRT FRANZ
分类号
B61L3/12
主分类号
B61L3/12
代理机构
代理人
主权项
地址
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