Marking device for index blanks,申请号US19340733212-传众专利搜索

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发明名称	Marking device for index blanks
摘要
申请公布号	US2154029(A)	申请公布日期	1939.04.11
申请号	US19340733212	申请日期	1934.06.30
申请人	THOMAS A. EDISON, INCORPORATED	发明人	BROWN THOMAS C.
分类号	G11B27/34	主分类号	G11B27/34
代理机构		代理人
主权项
地址

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