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发明名称
Improvements relating to umbrellas
摘要
申请公布号
GB344582(A)
申请公布日期
1931.03.12
申请号
GB19300000355
申请日期
1930.01.03
申请人
RICHARD WILLIAM DOWEY
发明人
分类号
A45B25/20
主分类号
A45B25/20
代理机构
代理人
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