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经营范围
发明名称
Telecommunication appts. ultra compact call tone generator
摘要
申请公布号
IT1239121(B)
申请公布日期
1993.09.28
申请号
IT19890022592
申请日期
1989.12.04
申请人
TELETTRA - TELEFONIA ELETTRONICA E RADIO
发明人
ECCHER CARLO;MILANI MARCO
分类号
H04M;(IPC1-7):H04M
主分类号
H04M
代理机构
代理人
主权项
地址
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