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发明名称	Reel
摘要
申请公布号	US2256400(A)	申请公布日期	1941.09.16
申请号	US19400327483	申请日期	1940.04.02
申请人	THE AETNA STANDARD ENGINEERING COMPANY	发明人	MATTHEWS PERCY W.
分类号	B21C47/30	主分类号	B21C47/30
代理机构		代理人
主权项
地址

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