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发明名称
Mining machine chain and pintle
摘要
申请公布号
US2956442(A)
申请公布日期
1960.10.18
申请号
US19580708291
申请日期
1958.01.10
申请人
THE CINCINNATI MINE MACHINERY CO.
发明人
KREKELER CLAUDE B.
分类号
E21C25/28;F16G13/06
主分类号
E21C25/28
代理机构
代理人
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地址
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