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发明名称
EMERGENCY CALL SYSTEM
摘要
申请公布号
GB8427775(D0)
申请公布日期
1984.12.12
申请号
GB19840027775
申请日期
1984.11.02
申请人
TUNSTALL TELECOM LTD
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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