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发明名称
摘要
申请公布号	NO121264(B)	申请公布日期	1971.02.08
申请号	NO19650157603	申请日期	1965.04.09
申请人	AMERICAN FLANGE & MANUFACTURING CO INC	发明人	PENTESCO W
分类号	B21D51/50;B21H3/00	主分类号	B21D51/50
代理机构		代理人
主权项
地址

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