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发明名称
Contact shoe
摘要
申请公布号
US1766639(A)
申请公布日期
1930.06.24
申请号
US19280323112
申请日期
1928.12.01
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
HOWE WINTHROP K.
分类号
B60L5/38
主分类号
B60L5/38
代理机构
代理人
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地址
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