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发明名称
Attachment for welder's shields
摘要
申请公布号
US2294799(A)
申请公布日期
1942.09.01
申请号
US19400366181
申请日期
1940.11.18
申请人
MARTIN OLSEN
发明人
OLSEN MARTIN
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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