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发明名称
摘要
申请公布号
JPH02123357(U)
申请公布日期
1990.10.11
申请号
JP19890030988U
申请日期
1989.03.17
申请人
发明人
分类号
B22D17/20;B22C23/02;B22D17/32;(IPC1-7):B22D17/32
主分类号
B22D17/20
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代理人
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