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发明名称
Railway switch operating apparatus
摘要
申请公布号
US1820756(A)
申请公布日期
1931.08.25
申请号
US19300419290
申请日期
1930.01.08
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
MCWHIRTER WILLIAM C.
分类号
B61L5/06
主分类号
B61L5/06
代理机构
代理人
主权项
地址
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