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发明名称
Railroad base plate and fastener
摘要
申请公布号
US2003498(A)
申请公布日期
1935.06.04
申请号
US19320635111
申请日期
1932.09.27
申请人
WENNER WESLEY E
发明人
WENNER WESLEY E.
分类号
E01B9/60
主分类号
E01B9/60
代理机构
代理人
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