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发明名称
Electrical conversion system with high and low voltage alarm
摘要
申请公布号
US2719289(A)
申请公布日期
1955.09.27
申请号
US19520288285
申请日期
1952.05.16
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
JR. JOHN M. BARSTOW,
分类号
H04B3/10
主分类号
H04B3/10
代理机构
代理人
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地址
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