Anordning til Bestemmelse af Telefonsamtalers Varighed.,申请号DKD45289-传众专利搜索

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发明名称	Anordning til Bestemmelse af Telefonsamtalers Varighed.
摘要
申请公布号	DK45289(C)	申请公布日期	1932.02.22
申请号	DKD45289	申请日期	1931.03.14
申请人	TELEFONAKTIEBOLAGET L. M. ERICSSON	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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