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摘要
申请公布号
US2972880(A)
申请公布日期
1961.02.28
申请号
US19570670195
申请日期
1957.07.05
申请人
DAVID ROBINSON
发明人
ROBINSON DAVID
分类号
A45C11/32
主分类号
A45C11/32
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代理人
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