Switch means for indicating time intervals,申请号US19460685343-传众专利搜索

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发明名称	Switch means for indicating time intervals
摘要
申请公布号	US2523602(A)	申请公布日期	1950.09.26
申请号	US19460685343	申请日期	1946.07.22
申请人	RONALD TELFORD	发明人	TELFORD RONALD
分类号	G04F3/00;G04F3/02	主分类号	G04F3/00
代理机构		代理人
主权项
地址

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