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发明名称
Прибор для отвинчивания инструмента на правых штангах
摘要
申请公布号
SU43369(A1)
申请公布日期
1935.05.31
申请号
SU19340147368
申请日期
1934.05.09
申请人
YURKOV I.A.
发明人
YURKOV I.A.
分类号
E21B31/00;E21B23/00
主分类号
E21B31/00
代理机构
代理人
主权项
地址
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