Call metering in telephone systems and the like,申请号US19550502909-传众专利搜索

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发明名称	Call metering in telephone systems and the like
摘要
申请公布号	US2862057(A)	申请公布日期	1958.11.25
申请号	US19550502909	申请日期	1955.04.21
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人	TOPFER HERBERT
分类号	H04M15/10	主分类号	H04M15/10
代理机构		代理人
主权项
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