Wall cleaning device,申请号US19420434099-传众专利搜索

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发明名称	Wall cleaning device
摘要
申请公布号	US2335623(A)	申请公布日期	1943.11.30
申请号	US19420434099	申请日期	1942.03.10
申请人	UTTERBACK JAMES G	发明人	UTTERBACK JAMES G.
分类号	A47L11/38	主分类号	A47L11/38
代理机构		代理人
主权项
地址

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