World time indicator,申请号US19450573999-传众专利搜索

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发明名称	World time indicator
摘要
申请公布号	US2513465(A)	申请公布日期	1950.07.04
申请号	US19450573999	申请日期	1945.01.22
申请人	THOMAS FISK ERNEST	发明人	FISK ERNEST THOMAS
分类号	G04B19/22	主分类号	G04B19/22
代理机构		代理人
主权项
地址

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