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发明名称
Ring guard
摘要
申请公布号
US1885930(A)
申请公布日期
1932.11.01
申请号
US19300490604
申请日期
1930.10.23
申请人
JAMES LOWY
发明人
LOWY JAMES
分类号
A44C9/00
主分类号
A44C9/00
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代理人
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