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发明名称
Railway rail fastening
摘要
申请公布号
US2181408(A)
申请公布日期
1939.11.28
申请号
US19370132364
申请日期
1937.03.22
申请人
RAILWAY TRACK JOINT CORPORATION
发明人
NEAL ERNEST C.
分类号
E01B11/44
主分类号
E01B11/44
代理机构
代理人
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地址
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