Pipe cleaning tool,申请号US19390264086-传众专利搜索

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发明名称	Pipe cleaning tool
摘要
申请公布号	US2281918(A)	申请公布日期	1942.05.05
申请号	US19390264086	申请日期	1939.03.25
申请人	PIPE CLEANING COMPANY, INC.	发明人	CONSTANT THOMAS D.;BOULTON CARSON B.
分类号	B08B9/04;B08B9/043	主分类号	B08B9/04
代理机构		代理人
主权项
地址

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