Typewriter key guide,申请号US19390310990-传众专利搜索

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发明名称	Typewriter key guide
摘要
申请公布号	US2236413(A)	申请公布日期	1941.03.25
申请号	US19390310990	申请日期	1939.12.26
申请人	FRED PIRNAT;PHILIP PIRNAT	发明人	PIRNAT FRED;PIRNAT PHILIP
分类号	B41J5/22	主分类号	B41J5/22
代理机构		代理人
主权项
地址

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