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发明名称
Circuit controlling instrument
摘要
申请公布号
US2076928(A)
申请公布日期
1937.04.13
申请号
US19350054500
申请日期
1935.12.14
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
WITMER HAROLD G.
分类号
B61L1/04
主分类号
B61L1/04
代理机构
代理人
主权项
地址
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