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摘要
申请公布号
US1895912(A)
申请公布日期
1933.01.31
申请号
US19310535917
申请日期
1931.05.08
申请人
BOWERS EDWARD W
发明人
BOWERS EDWARD W.
分类号
A47G29/122
主分类号
A47G29/122
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