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发明名称
Vollduplex-digitaler Lautfernsprecher.
摘要
申请公布号
DE68919807(T2)
申请公布日期
1995.07.13
申请号
DE19896019807T
申请日期
1989.09.12
申请人
ROLM CO., SANTA CLARA, CALIF., US
发明人
ARBEL, YGAL, SUNNYVALE, CA. 94089, US
分类号
H04M1/60;H04B3/23;H04M9/08;(IPC1-7):H04M9/08
主分类号
H04M1/60
代理机构
代理人
主权项
地址
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