YARN CORE WITH A CAVITY TO FACILITATE YARN REMOVAL,申请号CAD806028-传众专利搜索

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发明名称	YARN CORE WITH A CAVITY TO FACILITATE YARN REMOVAL
摘要
申请公布号	CA806028(A)	申请公布日期	1969.02.11
申请号	CAD806028	申请日期
申请人	E.I. DU PONT DE NEMOURS AND COMPANY	发明人	IRBY E. HARTLEY, JR.
分类号		主分类号
代理机构		代理人
主权项
地址

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