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发明名称
Путеуплотнитель вибрационного действия
摘要
申请公布号
SU72350(A2)
申请公布日期
1947.11.30
申请号
SU19470371472
申请日期
1947.11.27
申请人
BELOGORTSEV P.G.
发明人
BELOGORTSEV P.G.
分类号
E01B27/20
主分类号
E01B27/20
代理机构
代理人
主权项
地址
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