Filter bed cleaning,申请号US19390268455-传众专利搜索

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发明名称	Filter bed cleaning
摘要
申请公布号	US2224191(A)	申请公布日期	1940.12.10
申请号	US19390268455	申请日期	1939.04.18
申请人	LOSE JR CHARLES	发明人	JR. CHARLES LOSE,
分类号	B01D21/00;B01D35/24;B03B5/26	主分类号	B01D21/00
代理机构		代理人
主权项
地址

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