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发明名称
Improvements in or relating to the construction of railway tracks
摘要
申请公布号
GB848143(A)
申请公布日期
1960.09.14
申请号
GB19580016648
申请日期
1958.05.23
申请人
BREVETS INDUSTRIELS S.A.
发明人
分类号
E01B9/04;E01B9/22;E01B11/44;E01B11/54;E01B13/02
主分类号
E01B9/04
代理机构
代理人
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