Key action for typewriters and other machines,申请号US19280249875-传众专利搜索

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发明名称	Key action for typewriters and other machines
摘要
申请公布号	US1759441(A)	申请公布日期	1930.05.20
申请号	US19280249875	申请日期	1928.01.27
申请人	THE DESHA TYPELEX TRUST ESTATE	发明人	DESHA ORVILLE U.
分类号	B41J7/02	主分类号	B41J7/02
代理机构		代理人
主权项
地址

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