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发明名称
Cutter chain
摘要
申请公布号
US2661940(A)
申请公布日期
1953.12.08
申请号
US19480029322
申请日期
1948.05.26
申请人
JOY MANUFACTURING COMPANY
发明人
ROLLINS LESTER G.
分类号
E21C25/28
主分类号
E21C25/28
代理机构
代理人
主权项
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