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发明名称
Welding mask
摘要
申请公布号
US2750592(A)
申请公布日期
1956.06.19
申请号
US19520294566
申请日期
1952.06.20
申请人
SALMINEN JOUKO B
发明人
SALMINEN JOUKO B.
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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