Electric clock system,申请号US19320622903-传众专利搜索

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发明名称	Electric clock system
摘要
申请公布号	US2030455(A)	申请公布日期	1936.02.11
申请号	US19320622903	申请日期	1932.07.16
申请人	INTERNATIONAL BUSINESS MACHINES CORPORATION	发明人	LARRABEE CLINTON E.
分类号	G04C13/04	主分类号	G04C13/04
代理机构		代理人
主权项
地址

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