Time control system and apparatus,申请号US19530354022-传众专利搜索

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发明名称	Time control system and apparatus
摘要
申请公布号	US2817401(A)	申请公布日期	1957.12.24
申请号	US19530354022	申请日期	1953.05.11
申请人	OSTRANDER JOHN K	发明人	OSTRANDER JOHN K.
分类号	G04C23/18	主分类号	G04C23/18
代理机构		代理人
主权项
地址

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