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发明名称
A two-way carrier-wave telephony station provided with a combination carrier oscillator and amplifier
摘要
申请公布号
US2760000(A)
申请公布日期
1956.08.21
申请号
US19510261106
申请日期
1951.12.11
申请人
HARTFORD NATIONAL BANK AND TRUST COMPANY
发明人
BEUKEMA JAN JACOB;CAMPHUIS JAN GEORGE
分类号
H04J1/10;H04M1/60
主分类号
H04J1/10
代理机构
代理人
主权项
地址
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