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发明名称
MANUFACTURE OF HOLLOW EXTRUDED ALUMINUM MATERIAL TO BE FORMED FOR VACUUM
摘要
申请公布号
JPH02290613(A)
申请公布日期
1990.11.30
申请号
JP19890109799
申请日期
1989.04.28
申请人
SHOWA ALUM CORP
发明人
KATO YUTAKA;OKITA KOICHI;ISOYAMA EIZO
分类号
B21C23/00
主分类号
B21C23/00
代理机构
代理人
主权项
地址
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