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发明名称
Sports helmet
摘要
申请公布号
US2985883(A)
申请公布日期
1961.05.30
申请号
US19590788547
申请日期
1959.01.23
申请人
MARIETTA MICHAEL T
发明人
MARIETTA MICHAEL T.
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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