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发明名称
Floor cleaner
摘要
申请公布号
US2226817(A)
申请公布日期
1940.12.31
申请号
US19380203330
申请日期
1938.04.21
申请人
HRANICKA ALBERT C
发明人
HRANICKA ALBERT C.
分类号
A47L13/11;A47L13/24
主分类号
A47L13/11
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