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发明名称
Элеватор
摘要
申请公布号
SU108530(A1)
申请公布日期
1957.11.30
申请号
SU19560564863
申请日期
1956.12.12
申请人
NEJMET L.L.
发明人
NEJMET L.L.
分类号
E21B19/06
主分类号
E21B19/06
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