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经营范围
发明名称
FISHING TOOL FOR CLEANING HOLE BOTTOM AREA
摘要
申请公布号
SU1266961(A1)
申请公布日期
1986.10.30
申请号
SU19843834056
申请日期
1984.12.29
申请人
VNI PK I PO VZRYVNYM METODAM GEOFIZICHESKOJ RAZVEDKI
发明人
AFANASEV VALERIJ A,SU;ZALOGIN VASILIJ P,SU;FRIDLYANDER NINA E,SU
分类号
E21B31/16
主分类号
E21B31/16
代理机构
代理人
主权项
地址
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