IMPROVEMENTS IN OR RELATING TO DATA EXCHANGE SYSTEMS,申请号GB19690018059-传众专利搜索

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发明名称	IMPROVEMENTS IN OR RELATING TO DATA EXCHANGE SYSTEMS
摘要
申请公布号	GB1242291(A)	申请公布日期	1971.08.11
申请号	GB19690018059	申请日期	1969.04.09
申请人	SIEMENS AKTIENGESELLSCHAFT	发明人
分类号	H04L12/50	主分类号	H04L12/50
代理机构		代理人
主权项
地址

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