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发明名称
Бар
摘要
申请公布号
SU68572(A2)
申请公布日期
1946.11.30
申请号
SU19440341407
申请日期
1944.02.17
申请人
IVENSEN P.A.
发明人
IVENSEN P.A.
分类号
E21C25/26;E21C27/08;E21C25/20
主分类号
E21C25/26
代理机构
代理人
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