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发明名称
RINGING CURRENT GENERATOR ARRANGEMENT IN A SUBSCRIBERS TELEPHONE STATION
摘要
申请公布号
IL52215(D0)
申请公布日期
1977.08.31
申请号
IL19770052215
申请日期
1977.06.01
申请人
ZELLWEGER USTER LTD
发明人
分类号
H04M19/04
主分类号
H04M19/04
代理机构
代理人
主权项
地址
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