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发明名称
Wall cleaner
摘要
申请公布号
US1973779(A)
申请公布日期
1934.09.18
申请号
US19330691302
申请日期
1933.09.28
申请人
RANEY JOHN R
发明人
RANEY JOHN R.
分类号
A47L13/00
主分类号
A47L13/00
代理机构
代理人
主权项
地址
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