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发明名称
HAMMER
摘要
申请公布号
EP0284759(B1)
申请公布日期
1990.07.25
申请号
EP19880102341
申请日期
1988.02.18
申请人
SCHMIDT, PAUL
发明人
SCHMIDT, PAUL
分类号
E02D7/10;E21B4/14;E21B7/04;E21B7/26
主分类号
E02D7/10
代理机构
代理人
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地址
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