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发明名称
FILTRATION
摘要
申请公布号
GB1557067(A)
申请公布日期
1979.12.05
申请号
GB19760038856
申请日期
1977.09.12
申请人
BRITISH PETROLEUM CO LTD
发明人
分类号
E21B43/20;(IPC1-7):B01D37/00;B01D41/00
主分类号
E21B43/20
代理机构
代理人
主权项
地址
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