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发明名称
Improvements in or relating to the securing of railway sleeper chairs to railway sleepers
摘要
申请公布号
GB837414(A)
申请公布日期
1960.06.15
申请号
GB19550021654
申请日期
1955.07.27
申请人
JOHN FRANCIS LAWTON
发明人
分类号
E01B9/16;F16B43/00
主分类号
E01B9/16
代理机构
代理人
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