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发明名称
Shield for welder's helmets
摘要
申请公布号
US2394388(A)
申请公布日期
1946.02.05
申请号
US19450590547
申请日期
1945.04.27
申请人
ARTHUR KROGEL
发明人
KROGEL ARTHUR
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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