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发明名称
Signalling system for carrier frequency telephone systems
摘要
申请公布号
GB831499(A)
申请公布日期
1960.03.30
申请号
GB19560030874
申请日期
1956.10.10
申请人
DE STAAT DER NEDERLANDEN TEN DEZE VERTEGENWOORDIGD DOOR DE DIRECTEUR - GENERAAL DER POSTERIJEN, TELEGRAFIE EN TELEFONIE
发明人
KAMERBECK GERRIT JAN
分类号
H04J1/14
主分类号
H04J1/14
代理机构
代理人
主权项
地址
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