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经营范围
发明名称
ESTRUTURA DE CABECOTE DE POCO
摘要
申请公布号
BR8805879(A)
申请公布日期
1989.08.01
申请号
BR1988PI05879
申请日期
1988.11.10
申请人
CAMERON IRON WORKS USA, INC.
发明人
EDWARD J. SZYMCZAK;THOMAS G. CASSITY;WILLIAM M. TAYLOR;PEER H. TIEMER;LARRY M. HOES;JERRY D. SMITH;TIMOTHY C. DAVIES
分类号
E21B33/037;E21B33/00;E21B33/04;F16L13/16;(IPC1-7):E21B33/03
主分类号
E21B33/037
代理机构
代理人
主权项
地址
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