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经营范围
发明名称
Oxygen mask
摘要
申请公布号
US2348277(A)
申请公布日期
1944.05.09
申请号
US19410388482
申请日期
1941.04.14
申请人
BOOTHBY WALTER M;BULBULIAN ARTHUR H
发明人
BOOTHBY WALTER M.;BULBULIAN ARTHUR H.
分类号
A62B18/00
主分类号
A62B18/00
代理机构
代理人
主权项
地址
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