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发明名称
摘要
申请公布号
JPS5226230(B2)
申请公布日期
1977.07.13
申请号
JP19730049980
申请日期
1973.05.04
申请人
发明人
分类号
B21B1/22;B21C37/08;B21D5/08
主分类号
B21B1/22
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代理人
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地址
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