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经营范围
发明名称
WELLHEAD SEALING DEVICE
摘要
申请公布号
SU1645456(A1)
申请公布日期
1991.04.30
申请号
SU19884610112
申请日期
1988.12.06
申请人
UK VOENIZIROVANNAYA CHAST PO PREDUPREZHDENIYU VOZNIKNOVENIYA PO LIKVIDATSII OTKRYTYKH GAZOVYKH NEFTYANYKH FONTANOV
发明人
KLIMCHUK KONSTANTIN F,SU;RYMCHUK DANILO V,SU
分类号
E21B33/03
主分类号
E21B33/03
代理机构
代理人
主权项
地址
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