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发明名称
FACE PROTECTOR FOR FIRE FIGHTERS
摘要
申请公布号
CA450041(A)
申请公布日期
1948.07.20
申请号
CAD450041
申请日期
申请人
LOWELL L. HALL
发明人
MORRIS W. MANLIN;RALPH E. WELKER
分类号
主分类号
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代理人
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