Invention Grant
- Patent Title: Call data recording telephone system
- Patent Title (中): 呼叫数据录音电话系统
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Application No.: US46310254Application Date: 1954-10-19
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Publication No.: US2848543APublication Date: 1958-08-19
- Inventor: BREED ROLLAND N , ORFEO CESAREO , GERMANTON CHARLES E , ROBERTS ROBERT W , WEBER LAURANCE A , WINGARDNER CHARLES A
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US46310254 1954-10-19
- Main IPC: H04M15/38
- IPC: H04M15/38
Information query
