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发明名称
BROENNSYSTEM
摘要
申请公布号
NO814064(A)
申请公布日期
1982.06.01
申请号
NO19810004064
申请日期
1981.11.27
申请人
OTIS ENGINEERING CORP,
发明人
LONG, OLEN RAY,
分类号
E21B23/02;E21B23/08;E21B34/00;E21B34/14;E21B43/14;(IPC1-7):E21B/
主分类号
E21B23/02
代理机构
代理人
主权项
地址
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