Engraver's mat,申请号US19270238410-传众专利搜索

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发明名称	Engraver's mat
摘要
申请公布号	US1903813(A)	申请公布日期	1933.04.18
申请号	US19270238410	申请日期	1927.12.07
申请人	GLENN ARTHUR B	发明人	GLENN ARTHUR B.
分类号	B41C3/00	主分类号	B41C3/00
代理机构		代理人
主权项
地址

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