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发明名称
Track grinding brick and adapter
摘要
申请公布号
US2093969(A)
申请公布日期
1937.09.21
申请号
US19350035434
申请日期
1935.08.09
申请人
NORTON COMPANY
发明人
LARSSON THURE
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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