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发明名称
BROENNVERKTOEY.
摘要
申请公布号
NO851369(A)
申请公布日期
1985.10.25
申请号
NO19850001369
申请日期
1985.04.02
申请人
OTIS ENGINEERING CORP,
发明人
HIGGINS, BRYAN D.,
分类号
E21B23/02;(IPC1-7):E21B/
主分类号
E21B23/02
代理机构
代理人
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地址
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