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发明名称
PRODUCTION OF SEAMLESS STEEL PIPE
摘要
申请公布号
JPS57168711(A)
申请公布日期
1982.10.18
申请号
JP19810054735
申请日期
1981.04.10
申请人
SUMITOMO KINZOKU KOGYO KK
发明人
HAYASHI CHIHIRO
分类号
B21B19/02;B21B19/04;(IPC1-7):B21B19/04
主分类号
B21B19/02
代理机构
代理人
主权项
地址
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