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发明名称
Carpet and floor cleaner
摘要
申请公布号
US1816538(A)
申请公布日期
1931.07.28
申请号
US19270163730
申请日期
1927.01.26
申请人
BERNARD KERN
发明人
KERN BERNARD
分类号
A47L5/32;A47L9/02
主分类号
A47L5/32
代理机构
代理人
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地址
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