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发明名称
Machine pour piocher et dégarnir de leur ballast les cases formées entre les traverses des voies ferrées.
摘要
申请公布号
CH299643(A)
申请公布日期
1954.06.30
申请号
CHD299643
申请日期
1950.04.19
申请人
PHILBRICK,FRANK HERBERT
发明人
HERBERT PHILBRICK,FRANK
分类号
E01B27/04
主分类号
E01B27/04
代理机构
代理人
主权项
地址
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