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经营范围
发明名称
Welder's shield
摘要
申请公布号
US2396239(A)
申请公布日期
1946.03.12
申请号
US19430513524
申请日期
1943.12.09
申请人
BECK EDWARD R
发明人
BECK EDWARD R.
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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