Covering unit and method of making the same,申请号US19290397814-传众专利搜索

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发明名称	Covering unit and method of making the same
摘要
申请公布号	US1845419(A)	申请公布日期	1932.02.16
申请号	US19290397814	申请日期	1929.10.07
申请人	ARMSTRONG CORK COMPANY	发明人	KAUFFMAN BENJAMIN H.
分类号	D06N7/00	主分类号	D06N7/00
代理机构		代理人
主权项
地址

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