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发明名称
Cutter chain
摘要
申请公布号
US1961370(A)
申请公布日期
1934.06.05
申请号
US19330665149
申请日期
1933.04.08
申请人
LEE ARTHUR L
发明人
LEE ARTHUR L.
分类号
E21C25/36
主分类号
E21C25/36
代理机构
代理人
主权项
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