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发明名称
Mining machine
摘要
申请公布号
US1815873(A)
申请公布日期
1931.07.21
申请号
US19270179357
申请日期
1927.03.29
申请人
SULLIVAN MACHINERY COMPANY
发明人
HOLMES MORRIS P.
分类号
E21C29/10
主分类号
E21C29/10
代理机构
代理人
主权项
地址
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