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发明名称
VERBESSERTE AUFBLASBARE DICHTUNGSVORRICHTUNG UND VERBESSERTES ABDICHTUNGSVERFAHREN
摘要
申请公布号
DE4127923(A1)
申请公布日期
1992.03.26
申请号
DE19914127923
申请日期
1991.08.23
申请人
BAKER-HUGHES INC., HOUSTON, TEX., US
发明人
MODY, RUSTOM K., HOUSTON, TEX., US
分类号
E21B33/127
主分类号
E21B33/127
代理机构
代理人
主权项
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