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发明名称
RICHTUNGSBOHRWERKZEUG
摘要
申请公布号
DE3939538(A1)
申请公布日期
1991.06.13
申请号
DE19893939538
申请日期
1989.11.30
申请人
EASTMAN CHRISTENSEN CO., SALT LAKE CITY, UTAH, US
发明人
JUERGENS, RAINER, DR.-ING., 3100 CELLE, DE;ROEPER, RUDOLF, PROF., 4600 DORTMUND, DE;KREHL, DIETMAR, 3101 LACHENDORF, DE;FELD, DAGOBERT;OPPELT, JOACHIM, DR.-ING., 3000 HANNOVER, DE
分类号
E21B4/16;E21B7/06;E21B7/08
主分类号
E21B4/16
代理机构
代理人
主权项
地址
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