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发明名称
摘要
申请公布号
DE2206912(C3)
申请公布日期
1984.04.19
申请号
DE19722206912
申请日期
1972.02.14
申请人
HITACHI, LTD., TOKIO/TOKYO, JP
发明人
KAJIWARA, TOSHIYUKI;SONOBE, NORIYOSHI;NISHI, HIDETOSHI;HAYASHI, MASAHIRO, HITACHI, JP
分类号
B21B13/02;B21B13/14;B21B27/02;B21B27/10;B21B31/02;B21B31/18;B21B31/20;B21B35/12;B21B35/14;B21B39/08;(IPC1-7):B21B13/14
主分类号
B21B13/02
代理机构
代理人
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