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发明名称
Speed-indicating system
摘要
申请公布号
US1747041(A)
申请公布日期
1930.02.11
申请号
US19280315568
申请日期
1928.10.27
申请人
GENERAL ELECTRIC COMPANY
发明人
ALEXANDERSON ERNST F. W.
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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