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经营范围
发明名称
Coffee filter
摘要
申请公布号
US2573246(A)
申请公布日期
1951.10.30
申请号
US19470744134
申请日期
1947.04.26
申请人
CHESTER FRANK R
发明人
CHESTER FRANK R.
分类号
A47J31/043
主分类号
A47J31/043
代理机构
代理人
主权项
地址
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