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摘要
申请公布号
GB2214231(A)
申请公布日期
1989.08.31
申请号
GB19870030267
申请日期
1987.12.29
申请人
YAU DANG * CHENG
发明人
YAU DANG * CHENG
分类号
A44B19/26
主分类号
A44B19/26
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