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发明名称
Track grinder
摘要
申请公布号
US1991234(A)
申请公布日期
1935.02.12
申请号
US19320642160
申请日期
1932.11.11
申请人
NORDBERG MANUFACTURING CO.
发明人
TALBOYS HENRY H.
分类号
E01B31/17
主分类号
E01B31/17
代理机构
代理人
主权项
地址
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