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发明名称
Suction cleaning machine
摘要
申请公布号
US2227649(A)
申请公布日期
1941.01.07
申请号
US19380192111
申请日期
1938.02.23
申请人
JOHN HUTCHINSON RICHARD
发明人
HUTCHINSON RICHARD JOHN
分类号
A47L9/04
主分类号
A47L9/04
代理机构
代理人
主权项
地址
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