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经营范围
发明名称
Breathing mask
摘要
申请公布号
US2379493(A)
申请公布日期
1945.07.03
申请号
US19420432726
申请日期
1942.02.28
申请人
MOREHOUSE SILAS A
发明人
MOREHOUSE SILAS A.
分类号
A62B7/02
主分类号
A62B7/02
代理机构
代理人
主权项
地址
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