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发明名称	Copyholder
摘要
申请公布号	US2462273(A)	申请公布日期	1949.02.22
申请号	US19450603419	申请日期	1945.07.06
申请人	METCALF EARL H	发明人	METCALF EARL H.
分类号	B41J29/15	主分类号	B41J29/15
代理机构		代理人
主权项
地址

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