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发明名称
METHOD OF PRODUCING DEEP SLEEVES
摘要
申请公布号
SU1538956(A1)
申请公布日期
1990.01.30
申请号
SU19884463316
申请日期
1988.05.25
申请人
NOVGORODSKIJ POLT INSTITUT
发明人
ARENDATELEV IGOR G,SU;MEDVEDEVA MARINA A,SU
分类号
B21D22/30
主分类号
B21D22/30
代理机构
代理人
主权项
地址
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