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发明名称
Welding helmet with air pressure responsive shiftable eye protective lens
摘要
申请公布号
US2613353(A)
申请公布日期
1952.10.14
申请号
US19500164250
申请日期
1950.05.25
申请人
SCHNITZLER WALTER A
发明人
SCHNITZLER WALTER A.
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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