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经营范围
发明名称
RETRIEVABLE FILTER APPARATUS
摘要
申请公布号
US3437135(A)
申请公布日期
1969.04.08
申请号
USD3437135
申请日期
1967.01.03
申请人
PHILLIPS PETROLEUM CO.
发明人
JACK C. COX;ROBERT F. MELDAU
分类号
E21B43/08;E21B43/10;(IPC1-7):E21B43/10
主分类号
E21B43/08
代理机构
代理人
主权项
地址
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