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发明名称
Helmet having a crown shielding device
摘要
申请公布号
US3111674(A)
申请公布日期
1963.11.26
申请号
US19610140357
申请日期
1961.09.25
申请人
MARIETTA MICHAEL T
发明人
MARIETTA MICHAEL T.
分类号
A42B3/14
主分类号
A42B3/14
代理机构
代理人
主权项
地址
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