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发明名称
Alarm sending system
摘要
申请公布号
US2719960(A)
申请公布日期
1955.10.04
申请号
US19540426790
申请日期
1954.04.30
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BACHELET ALBERT E.;PULLIS GEORGE A.
分类号
H04B17/02
主分类号
H04B17/02
代理机构
代理人
主权项
地址
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