Paper end indicator for typewriters,申请号US19610152777-传众专利搜索

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发明名称	Paper end indicator for typewriters
摘要
申请公布号	US3091321(A)	申请公布日期	1963.05.28
申请号	US19610152777	申请日期	1961.11.16
申请人	ARTNELL COMPANY	发明人	ASHWORTH WILLIAM J.
分类号		主分类号
代理机构		代理人
主权项
地址

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