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发明名称
Attachment of carbide hard alloys to steel tools
摘要
申请公布号
US3191700(A)
申请公布日期
1965.06.29
申请号
US19630271635
申请日期
1963.04.09
申请人
KENNAMETAL INC.
发明人
MCKENNA PHILIP M.
分类号
E21B10/58
主分类号
E21B10/58
代理机构
代理人
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地址
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