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发明名称
KOMBINIERTES LAUT UND LEISE SPRECHENDES TELEFON MIT ZWEI AKUSTISCHEN WANDLERN
摘要
申请公布号
DE2053862(B2)
申请公布日期
1971.11.04
申请号
DE19702053862
申请日期
1970.10.29
申请人
发明人
分类号
H04M1/00;H04M1/02;H04M1/60;H04M1/62;(IPC1-7):H04M1/60
主分类号
H04M1/00
代理机构
代理人
主权项
地址
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