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发明名称
摘要
申请公布号
JPS6454927(U)
申请公布日期
1989.04.05
申请号
JP19870151334U
申请日期
1987.10.01
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发明人
分类号
B21D43/00;(IPC1-7):B21D43/00
主分类号
B21D43/00
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