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发明名称
Cutter chain
摘要
申请公布号
US2068666(A)
申请公布日期
1937.01.26
申请号
US19340731378
申请日期
1934.06.19
申请人
THE JEFFREY MANUFACTURING COMPANY
发明人
DUNLOP ROBERT R.
分类号
E21C25/36
主分类号
E21C25/36
代理机构
代理人
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地址
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