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发明名称
Coring apparatus
摘要
申请公布号
US2927776(A)
申请公布日期
1960.03.08
申请号
US19580719931
申请日期
1958.03.07
申请人
JERSEY PRODUCTION RESEARCH COMPANY
发明人
HILDEBRANDT ALEXANDER B.;BRIDWELL HAROLD C.
分类号
E21B25/06
主分类号
E21B25/06
代理机构
代理人
主权项
地址
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