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发明名称
Telephone signaling conversion circuit for pulses and tones
摘要
申请公布号
US3315039(A)
申请公布日期
1967.04.18
申请号
US19630312463
申请日期
1963.09.30
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
GEBHARDT ROBERT C.;JR. ALBERT E. SPENCER,;TAEBEL TERRY A.
分类号
H04Q1/50;H04Q11/04
主分类号
H04Q1/50
代理机构
代理人
主权项
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