Invention Grant
- Patent Title: Private branch exchange automatic number identification system
- Patent Title (中): 私人交换机自动识别系统
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Application No.: US38999364Application Date: 1964-08-17
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Publication No.: US3346700APublication Date: 1967-10-10
- Inventor: ANDERSON HAROLD P , MCMAHON FRANK J , SCHARG GEORGE A , HARRY WINTER
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US38999364 1964-08-17
- Main IPC: B25B7/10
- IPC: B25B7/10 ; H04Q3/62
Information query
IPC分类:
