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发明名称
EXTERNAL CENTERING DEVICE FOR PRE-WELDING ASSEMBLING OF TUBES
摘要
申请公布号
SU612766(A1)
申请公布日期
1978.06.30
申请号
SU19742077096
申请日期
1974.11.19
申请人
VNII RAZRABOTKI EKSPLUATATSII NEFTEPROMYSLOVYKH TRUB
发明人
BUTYLKIN ALEKSANDR V,SU;PCHELKIN VIKTOR N,SU;ZHURAVLEV SERGEJ V,SU
分类号
B23K37/04;(IPC1-7):B23K31/06
主分类号
B23K37/04
代理机构
代理人
主权项
地址
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