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发明名称
摘要
申请公布号
JPH0217708(Y2)
申请公布日期
1990.05.17
申请号
JP19850189539U
申请日期
1985.12.11
申请人
发明人
分类号
B21D7/06;(IPC1-7):B21D7/06
主分类号
B21D7/06
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代理人
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地址
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