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发明名称
ROLL CHANGER IN MANUFACTURING EQUIPMENT FOR RESISTANCE WELDED TUBE
摘要
申请公布号
JPH02169116(A)
申请公布日期
1990.06.29
申请号
JP19880325511
申请日期
1988.12.23
申请人
SUMITOMO HEAVY IND LTD
发明人
ISHINO KEIZO
分类号
B21B31/08;B21B31/12
主分类号
B21B31/08
代理机构
代理人
主权项
地址
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