Coil cleaning method,申请号US19380239090-传众专利搜索

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发明名称	Coil cleaning method
摘要
申请公布号	US2189950(A)	申请公布日期	1940.02.13
申请号	US19380239090	申请日期	1938.11.05
申请人	GUMP GEORGE M	发明人	GUMP GEORGE M.
分类号	B08B9/02	主分类号	B08B9/02
代理机构		代理人
主权项
地址

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