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发明名称
Railway track support
摘要
申请公布号
US3313486(A)
申请公布日期
1967.04.11
申请号
US19640410153
申请日期
1964.11.10
申请人
PAUL SONNEVILLE ROGER
发明人
SONNEVILLE ROGER PAUL
分类号
E01B3/36;E01B3/40;E01B9/30;E01B9/68
主分类号
E01B3/36
代理机构
代理人
主权项
地址
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