ARRANGEMENT FOR CONTROL OF TIMER FOR TEACHING SYSTEM,申请号SU19772463658-传众专利搜索

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发明名称	ARRANGEMENT FOR CONTROL OF TIMER FOR TEACHING SYSTEM
摘要
申请公布号	SU684597(A1)	申请公布日期	1979.09.05
申请号	SU19772463658	申请日期	1977.02.01
申请人	SOBOLEVSKIJ MIKHAIL ,SU	发明人	SOBOLEVSKIJ MIKHAIL ,SU
分类号	G09B7/00;(IPC1-7):G09B7/00	主分类号	G09B7/00
代理机构		代理人
主权项
地址

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