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发明名称
Coupling for well casings
摘要
申请公布号
US5007665(A)
申请公布日期
1991.04.16
申请号
US19870136599
申请日期
1987.12.21
申请人
BOVISIO, CIPRIANO;FOGLIENI, CARLO;FUMAGALLI, FULGENZIO;MORLOTTI, NORBERTO;PALLADINI, MARIO
发明人
BOVISIO, CIPRIANO;FOGLIENI, CARLO;FUMAGALLI, FULGENZIO;MORLOTTI, NORBERTO;PALLADINI, MARIO
分类号
E21B17/042;E21B17/08;F16L15/00;F16L15/06
主分类号
E21B17/042
代理机构
代理人
主权项
地址
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