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发明名称
Floor machine with retractable wheels and adjustable handle assembly
摘要
申请公布号
US2949619(A)
申请公布日期
1960.08.23
申请号
US19570652196
申请日期
1957.04.11
申请人
HOLT WILLIAM E
发明人
HOLT WILLIAM E.
分类号
A47L11/162;A47L11/40
主分类号
A47L11/162
代理机构
代理人
主权项
地址
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