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发明名称
SIMPLE METAL MOLD DEVICE OF WORKING SURFACE OF HOLLOW MATERIAL
摘要
申请公布号
JPS54115494(A)
申请公布日期
1979.09.08
申请号
JP19780022440
申请日期
1978.02.28
申请人
OKAMOTO MASAO
发明人
OKAMOTO MASAO
分类号
B21D28/12;B21D28/28;B21D28/34;B23D27/00;B23D31/00
主分类号
B21D28/12
代理机构
代理人
主权项
地址
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