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发明名称
METHOD FOR FORMING RECTANGULAR HOLE ON PLATE STOCK
摘要
申请公布号
JPH01148427(A)
申请公布日期
1989.06.09
申请号
JP19870304732
申请日期
1987.12.02
申请人
SEIKOSHA CO LTD
发明人
KONDO ISAO;AIZAWA JUNICHI
分类号
B21D28/10
主分类号
B21D28/10
代理机构
代理人
主权项
地址
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