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发明名称
Welder's hood
摘要
申请公布号
US2482209(A)
申请公布日期
1949.09.20
申请号
US19440560599
申请日期
1944.10.27
申请人
RALSTON FRANK D
发明人
RALSTON FRANK D.
分类号
A42B1/04;A61F9/06
主分类号
A42B1/04
代理机构
代理人
主权项
地址
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