ELECTRONIC SIGNALLING SYSTEM,申请号PL19840250690-传众专利搜索

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发明名称	ELECTRONIC SIGNALLING SYSTEM
摘要
申请公布号	PL143735(B1)	申请公布日期	1988.03.31
申请号	PL19840250690	申请日期	1984.11.30
申请人		发明人
分类号	G08B;G08B13/24;(IPC1-7):G08B13/24	主分类号	G08B
代理机构		代理人
主权项
地址

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