Expanding and contracting mandrel,申请号US19650442407-传众专利搜索

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发明名称	Expanding and contracting mandrel
摘要
申请公布号	US3301108(A)	申请公布日期	1967.01.31
申请号	US19650442407	申请日期	1965.03.24
申请人	ROYAL TYPEWRITER COMPANY, INC.	发明人	HEINER EDWARD A.
分类号	B23B31/40	主分类号	B23B31/40
代理机构		代理人
主权项
地址

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