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发明名称
DENTE DE ESCAVACAO E CONJUNTO DE DENTE DE ESCAVACAO
摘要
申请公布号
BR8706543(A)
申请公布日期
1988.07.12
申请号
BR19870006543
申请日期
1987.12.03
申请人
ESCO CORPORATION
发明人
ROBERT K. EMRICH
分类号
E02F3/40;E02F9/28;E21C37/18;(IPC1-7):E02F9/28
主分类号
E02F3/40
代理机构
代理人
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地址
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