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发明名称
摘要
申请公布号
DE3317748(C2)
申请公布日期
1988.06.16
申请号
DE19833317748
申请日期
1983.05.16
申请人
HITACHI, LTD., TOKIO/TOKYO, JP
发明人
HAYASHI, MASAHIRO, HITACHI, JP;SHIMIZU, MAKOTO;KOBAYASHI, KAZUO, IBARAKI, JP;SEKIYA, TERUO, TAKAHAGI, JP
分类号
B21B1/00;B21B1/16;B21B1/18;B21B13/08;B21B13/12;B21B31/06;B21B31/08;B21B31/10;B21B39/16;(IPC1-7):B21B31/08
主分类号
B21B1/00
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代理人
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地址
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