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经营范围
发明名称
Oxygen mask
摘要
申请公布号
US2843121(A)
申请公布日期
1958.07.15
申请号
US19550509832
申请日期
1955.05.20
申请人
HUDSON CHARLES H
发明人
HUDSON CHARLES H.
分类号
A61M16/06
主分类号
A61M16/06
代理机构
代理人
主权项
地址
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