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发明名称
摘要
申请公布号
JPH0227894(Y2)
申请公布日期
1990.07.26
申请号
JP19870031226U
申请日期
1987.03.04
申请人
发明人
分类号
A61G12/00;B02C18/00;B02C23/00;(IPC1-7):B02C18/40
主分类号
A61G12/00
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代理人
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