Attachment for typewriting machines,申请号US19440533140-传众专利搜索

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发明名称	Attachment for typewriting machines
摘要
申请公布号	US2389408(A)	申请公布日期	1945.11.20
申请号	US19440533140	申请日期	1944.04.28
申请人	BOYD ALBERT W	发明人	BOYD ALBERT W.
分类号	B41J19/16	主分类号	B41J19/16
代理机构		代理人
主权项
地址

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