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经营范围
发明名称
Respiratory valve for face mask
摘要
申请公布号
GB9401570(D0)
申请公布日期
1994.03.23
申请号
GB19940001570
申请日期
1994.01.27
申请人
BEARD MICHAEL A.
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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