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发明名称
GESCHUETZTE, AUSZIEHBARE VERBINDUNGSVORRICHTUNG
摘要
申请公布号
DE6906217(U)
申请公布日期
1971.07.29
申请号
DE19690006217U
申请日期
1969.02.17
申请人
PHILLIPS PETROLEUM CO.
发明人
分类号
E21B17/07
主分类号
E21B17/07
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代理人
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