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发明名称
Amplifier arrangement for loudspeaking telephones
摘要
申请公布号
US3146313(A)
申请公布日期
1964.08.25
申请号
US19620199016
申请日期
1962.05.31
申请人
TELEFONAKTIEBOLAGET L M ERICSSON
发明人
ULIN LARS GUNNAR
分类号
H04M9/10
主分类号
H04M9/10
代理机构
代理人
主权项
地址
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