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发明名称
Protective headgear
摘要
申请公布号
US2855604(A)
申请公布日期
1958.10.14
申请号
US19540468395
申请日期
1954.11.12
申请人
MINE SAFETY APPLIANCES COMPANY
发明人
AUSTIN HARRY W.
分类号
A42B3/22;A42B3/32
主分类号
A42B3/22
代理机构
代理人
主权项
地址
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