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发明名称
ROLLER BIT
摘要
申请公布号
SU1296712(A1)
申请公布日期
1987.03.15
申请号
SU19813369117
申请日期
1981.10.12
申请人
TRAVKIN VITALIJ S,SU;BURINSKIJ GENNADIJ G,SU;IVANOVSKAYA NADEZHDA,SU
发明人
TRAVKIN VITALIJ S,SU;BURINSKIJ GENNADIJ G,SU;IVANOVSKAYA NADEZHDA I,SU
分类号
E21B10/16
主分类号
E21B10/16
代理机构
代理人
主权项
地址
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