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发明名称
LINEAR SHEAR VALVE
摘要
申请公布号
GB2134156(B)
申请公布日期
1986.07.16
申请号
GB19830022372
申请日期
1983.08.19
申请人
* NL INDUSTRIES INC
发明人
MICHAEL L * LARRONDE;MANMOHAN S * KALSI;MANNIGE V * RAW;ROBERT G * HOOS
分类号
E21B47/18;(IPC1-7):E21B47/12
主分类号
E21B47/18
代理机构
代理人
主权项
地址
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