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经营范围
发明名称
WELL SEAL
摘要
申请公布号
SU949168(A1)
申请公布日期
1982.08.07
申请号
SU19803212618
申请日期
1980.12.04
申请人
PUSTOVOJTENKO IVAN P,SU;DYMA IVAN A,SU;BELOV ALEKSANDR A,SU
发明人
PUSTOVOJTENKO IVAN P,SU;DYMA IVAN A,SU;BELOV ALEKSANDR A,SU
分类号
E21B47/098;(IPC1-7):E21B47/09
主分类号
E21B47/098
代理机构
代理人
主权项
地址
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