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发明名称
GRAVEL PACK FOR PETROLEUM OR WATER WELLS.
摘要
申请公布号
EP0348463(A4)
申请公布日期
1990.03.08
申请号
EP19880910446
申请日期
1988.10.27
申请人
PATENT COMPANY THE
发明人
JACKSON, RICHARD, C.
分类号
B01D29/11;B01D29/15;B01D39/20;E21B43/04;E21B43/08
主分类号
B01D29/11
代理机构
代理人
主权项
地址
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