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发明名称
Face guard design
摘要
A face guard for an athletic helmet having at least one horizontal bar structure with the bar structure including a plurality of rotatable elements to inhibit gripping the bar structure by hand.
申请公布号
US4689835(A)
申请公布日期
1987.09.01
申请号
US19810317498
申请日期
1981.11.02
申请人
DRAFT, HOWARD J.;CHAMBERS, ROBERT W.
发明人
DRAFT, HOWARD J.;CHAMBERS, ROBERT W.
分类号
A42B3/20;(IPC1-7):A42B3/00
主分类号
A42B3/20
代理机构
代理人
主权项
地址
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