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发明名称
PROTECTING CHANGEOVER DEVICE FOR COMMUNICATION EXCHANGE SYSTEM
摘要
申请公布号
JPS555596(A)
申请公布日期
1980.01.16
申请号
JP19790080290
申请日期
1979.06.27
申请人
WESTERN ELECTRIC CO
发明人
MATTHEW FRANCIS SLANA;HENRY EARLE VAUGHAN
分类号
H04M3/22;H04Q11/04
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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