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经营范围
发明名称
Improvements relating to welders' helmets
摘要
申请公布号
GB704714(A)
申请公布日期
1954.02.24
申请号
GB19520003907
申请日期
1952.02.14
申请人
ANGLO-IRANIAN OIL COMPANY LIMITED;HAROLD CLIFFORD FRANK BAKER
发明人
分类号
A61F9/06
主分类号
A61F9/06
代理机构
代理人
主权项
地址
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