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发明名称
Floor polishing device
摘要
申请公布号
US2382969(A)
申请公布日期
1945.08.21
申请号
US19430492733
申请日期
1943.06.29
申请人
BOETTCHER WILLIAM A
发明人
BOETTCHER WILLIAM A.
分类号
A47L11/164;B24D11/00
主分类号
A47L11/164
代理机构
代理人
主权项
地址
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