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发明名称
Medical face mask
摘要
A medical face mask having the central portion of the mask made of a transparent material, providing a view of the wearer's mouth.
申请公布号
US4323063(A)
申请公布日期
1982.04.06
申请号
US19800142034
申请日期
1980.04.21
申请人
FISICHELLA, JEANNE M.
发明人
FISICHELLA, JEANNE M.
分类号
A41D13/11;(IPC1-7):A61B19/00
主分类号
A41D13/11
代理机构
代理人
主权项
地址
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