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摘要
申请公布号
US2841327(A)
申请公布日期
1958.07.01
申请号
US19560572053
申请日期
1956.03.16
申请人
DAVID CHASWORTH
发明人
CHASWORTH DAVID
分类号
A47G29/12
主分类号
A47G29/12
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