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发明名称
Polishing and cleaning device
摘要
申请公布号
US1897981(A)
申请公布日期
1933.02.14
申请号
US19320630526
申请日期
1932.08.26
申请人
ROBERT G. CROSSLEY;GEORGE W. DURHAM
发明人
JOHNSON AUSTIN C.
分类号
A47L17/04
主分类号
A47L17/04
代理机构
代理人
主权项
地址
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