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发明名称
PIPE EXPANDING DEVICE FOR PIPE HAVING INTERNAL SPIRAL GROOVE
摘要
申请公布号
JPS6483326(A)
申请公布日期
1989.03.29
申请号
JP19870240330
申请日期
1987.09.24
申请人
SHOWA ALUM CORP
发明人
SAITO SUSUMU;TAMURA TSUTOMU;NAKADA YOSHINOBU
分类号
B21D39/14;B21H3/00
主分类号
B21D39/14
代理机构
代理人
主权项
地址
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