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发明名称
DRILLING RIG
摘要
申请公布号
SU955869(A3)
申请公布日期
1982.08.30
申请号
SU19792856949
申请日期
1979.12.21
申请人
ZALTSGITTER MASHINEN UND ANLAGEN AG (FIRMA)
发明人
KHAJNRIKH MANTEN,DE
分类号
E21B21/00;B23B47/24;B23Q5/26;B23Q11/10;E21B19/00;E21B21/01;E21B44/06;(IPC1-7):E21B19/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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