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发明名称
Safety device in combination with a football helmet
摘要
申请公布号
US3283336(A)
申请公布日期
1966.11.08
申请号
US19640365247
申请日期
1964.05.06
申请人
CRITSER RUSSELL F
发明人
CRITSER RUSSELL F.
分类号
A42B3/20
主分类号
A42B3/20
代理机构
代理人
主权项
地址
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