Typing block-out mechanism for writing machines,申请号US19590834548-传众专利搜索

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发明名称	Typing block-out mechanism for writing machines
摘要
申请公布号	US3018871(A)	申请公布日期	1962.01.30
申请号	US19590834548	申请日期	1959.08.18
申请人	SPERRY RAND CORPORATION	发明人	BARKER JOSEPH W.
分类号	B41J25/22	主分类号	B41J25/22
代理机构		代理人
主权项
地址

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