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经营范围
发明名称
ROLLING CUTTER WITH TEETH
摘要
申请公布号
SU1657595(A1)
申请公布日期
1991.06.23
申请号
SU19894642780
申请日期
1989.01.30
申请人
VNI PK UGOLNYJ I "KUZNIUI"
发明人
LIVSHITS VLADIMIR I,SU;DERGUNOV DMITRIJ M,SU;GORIN ANATOLIJ T,SU;SETKOV VASILIJ K,SU
分类号
E21B10/52
主分类号
E21B10/52
代理机构
代理人
主权项
地址
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