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发明名称
Шарошечное долото с разгруженной опорой
摘要
申请公布号
SU109797(A1)
申请公布日期
1956.11.30
申请号
SU19500439968
申请日期
1950.12.16
申请人
GUSMAN M.T.;IOANNESYAN R.A.
发明人
GUSMAN M.T.;IOANNESYAN R.A.
分类号
E21B10/22
主分类号
E21B10/22
代理机构
代理人
主权项
地址
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