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发明名称
Railway switch lock
摘要
申请公布号
US2500616(A)
申请公布日期
1950.03.14
申请号
US19460693221
申请日期
1946.08.27
申请人
THE UNION SWITCH AND SIGNAL COMPANY
发明人
MCWHIRTER WILLIAM C.
分类号
B61L11/04
主分类号
B61L11/04
代理机构
代理人
主权项
地址
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