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发明名称
COMPOSITE STRIKER FOR BREAKING OVERSIZES
摘要
申请公布号
RU1771509(C)
申请公布日期
1992.10.23
申请号
SU19914919743
申请日期
1991.02.11
申请人
INST GEOTEKHNICHESKOI MEKHANI
发明人
YAVTUSHENKO OLEG V,SU
分类号
E21B1/12;E21C37/14
主分类号
E21B1/12
代理机构
代理人
主权项
地址
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