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发明名称
Improvements relating to welder's helmets
摘要
申请公布号
GB380568(A)
申请公布日期
1932.09.22
申请号
GB19310022950
申请日期
1931.08.14
申请人
ARTHUR JAMES BAILEY;FERGUSON PAILIN LIMITED
发明人
分类号
A61F9/06
主分类号
A61F9/06
代理机构
代理人
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