Methods of and devices for forming apertures in tubular stock,申请号US19650449920-传众专利搜索

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发明名称	Methods of and devices for forming apertures in tubular stock
摘要
申请公布号	US3256730(A)	申请公布日期	1966.06.21
申请号	US19650449920	申请日期	1965.04.08
申请人	FAULL JAMES K	发明人	FAULL JAMES K.
分类号	B21D28/28	主分类号	B21D28/28
代理机构		代理人
主权项
地址

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