PUBLIC TELEPHONE NETWORK,申请号EP20000958172-传众专利搜索

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发明名称	PUBLIC TELEPHONE NETWORK
摘要
申请公布号	EP1197047(A1)	申请公布日期	2002.04.17
申请号	EP20000958172	申请日期	2000.07.25
申请人	SIEMENS AKTIENGESELLSCHAFT	发明人	BRUMM, THOMAS
分类号	H04L12/58;H04M3/537;H04M3/54;(IPC1-7):H04L12/58;H04Q11/04	主分类号	H04L12/58
代理机构		代理人
主权项
地址

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