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发明名称
TELEPHONE ANSWERING APPARATUS WITH CUEING AND WARNING SIGNALS
摘要
申请公布号
US3501592(A)
申请公布日期
1970.03.17
申请号
USD3501592
申请日期
1964.03.30
申请人
ELECTROSPACE CORP.
发明人
HERBERT WALDMAN
分类号
H04M1/65;(IPC1-7):H04M11/10
主分类号
H04M1/65
代理机构
代理人
主权项
地址
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