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发明名称
An improved seal for respiratory protective equipment-supplement
摘要
申请公布号
GB0226458(D0)
申请公布日期
2002.12.18
申请号
GB20020026458
申请日期
2002.11.13
申请人
HOWIE, ROBIN M
发明人
分类号
主分类号
代理机构
代理人
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