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发明名称
Improvements relating to ventilation particularly as protection against poisonous gas and the like
摘要
申请公布号
GB505238(A)
申请公布日期
1939.05.08
申请号
GB19380005026
申请日期
1938.02.17
申请人
FREDERICK JOHN CLEVELAND;"S.I.C.A.A., S.A."
发明人
分类号
A62B13/00
主分类号
A62B13/00
代理机构
代理人
主权项
地址
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