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经营范围
发明名称
Гидромонитор
摘要
申请公布号
SU61953(A1)
申请公布日期
1941.11.30
申请号
SU19390026835
申请日期
1939.10.04
申请人
PRAZDNIKOV V.G.;TUPITSYN P.M.
发明人
PRAZDNIKOV V.G.;TUPITSYN P.M.
分类号
E21C25/60;E21C45/00
主分类号
E21C25/60
代理机构
代理人
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地址
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