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经营范围
发明名称
CEMENTING PLUG LAUNCHING APPARATUS
摘要
申请公布号
US3545542(A)
申请公布日期
1970.12.08
申请号
USD3545542
申请日期
1968.06.10
申请人
BYRON JACKSON INC.
发明人
LYLE B. SCOTT
分类号
E21B33/04;E21B33/043;E21B33/05;E21B33/076;E21B33/16;(IPC1-7):E21B33/12
主分类号
E21B33/04
代理机构
代理人
主权项
地址
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