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发明名称
PLANETARY DRILLING BIT
摘要
申请公布号
SU1406381(A1)
申请公布日期
1988.06.30
申请号
SU19864131698
申请日期
1986.10.08
申请人
VNII BUROVOJ TEKHNIKI
发明人
POPOV ALEKSANDR N,SU
分类号
E21D1/06
主分类号
E21D1/06
代理机构
代理人
主权项
地址
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