Electric keyboard shift and unshift,申请号US19610087390-传众专利搜索

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发明名称	Electric keyboard shift and unshift
摘要
申请公布号	US3212702(A)	申请公布日期	1965.10.19
申请号	US19610087390	申请日期	1961.02.06
申请人	JOHNSTON HAROLD L	发明人	JOHNSTON HAROLD L.
分类号	B41B25/00	主分类号	B41B25/00
代理机构		代理人
主权项
地址

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