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发明名称
Welding hood
摘要
申请公布号
US1990369(A)
申请公布日期
1935.02.05
申请号
US19340714601
申请日期
1934.03.08
申请人
BOYD IVAN J
发明人
BOYD IVAN J.
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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