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经营范围
发明名称
Protective helmet
摘要
申请公布号
US2785404(A)
申请公布日期
1957.03.19
申请号
US19540414255
申请日期
1954.03.05
申请人
MACGREGOR SPORT PRODUCTS, INC.
发明人
STROHM ELWOOD
分类号
A42B3/12
主分类号
A42B3/12
代理机构
代理人
主权项
地址
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