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发明名称
METHOD OF SAFEGUARDING DEVELOPMENT WORKINGS
摘要
申请公布号
SU1520246(A1)
申请公布日期
1989.11.07
申请号
SU19874264100
申请日期
1987.06.16
申请人
KARAGANDINSKIJ POLT INSTITUT
发明人
KHALMANOV KHABIL,SU;KHAMIMOLDANOV BAURZHAN,SU;KOYANBAEV URAL S,SU
分类号
E21D11/00;E21C41/18
主分类号
E21D11/00
代理机构
代理人
主权项
地址
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