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发明名称
MANUFACTURE OF STEEL TUBE WITH INTERNAL REINFORCEMENT
摘要
申请公布号
JPH11731(A)
申请公布日期
1999.01.06
申请号
JP19970126140
申请日期
1997.05.16
申请人
NAKAJIMA KOKAN KK
发明人
NAKAJIMA SHIN
分类号
E04C3/32;B21D39/04;B21D49/00;B23K25/00;(IPC1-7):B21D49/00
主分类号
E04C3/32
代理机构
代理人
主权项
地址
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