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发明名称
Laite kytkettäessä ja irtikytkettäessä soittosignaali soitetulle tilaajalle
摘要
申请公布号
FI892401(A0)
申请公布日期
1989.05.18
申请号
FI19890002401
申请日期
1989.05.18
申请人
OY L M ERICSSON AB
发明人
LOEFMARK, BENGT GUSTAV
分类号
H04M3/02;H04M19/02;(IPC1-7):H04M/
主分类号
H04M3/02
代理机构
代理人
主权项
地址
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