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发明名称
CORE BARREL ADJUSTING SYSTEM
摘要
申请公布号
CA2006607(A1)
申请公布日期
1990.06.24
申请号
CA19892006607
申请日期
1989.12.22
申请人
BEHRE, HANS-ULF
发明人
BEHRE, HANS-ULF;LAUKART, JAKOB
分类号
E21B25/00
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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