Positive locking drain plug,申请号US19670651578-传众专利搜索

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发明名称	Positive locking drain plug
摘要
申请公布号	US3400683(A)	申请公布日期	1968.09.10
申请号	US19670651578	申请日期	1967.07.06
申请人	CHARLES R. DE FOREST	发明人	FOREST CHARLES R. DE
分类号	B63B13/00	主分类号	B63B13/00
代理机构		代理人
主权项
地址

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