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经营范围
发明名称
Improvements in or relating to breathing apparatus
摘要
申请公布号
GB458538(A)
申请公布日期
1936.12.22
申请号
GB19360003046
申请日期
1936.01.31
申请人
ROBERT HENRY DAVIS
发明人
分类号
A62B9/00
主分类号
A62B9/00
代理机构
代理人
主权项
地址
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