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摘要
申请公布号
US1868467(A)
申请公布日期
1932.07.19
申请号
US19300472941
申请日期
1930.08.04
申请人
SITHENS EDWARD J
发明人
SITHENS EDWARD J.
分类号
A47B19/04
主分类号
A47B19/04
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