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经营范围
发明名称
Wire line liquid or gas formation thief
摘要
申请公布号
US2905247(A)
申请公布日期
1959.09.22
申请号
US19550531934
申请日期
1955.09.01
申请人
PGAC DEVELOPMENT CO.
发明人
VESTERMARK LYLE A.
分类号
E21B49/10
主分类号
E21B49/10
代理机构
代理人
主权项
地址
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