Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"SCHARG GEORGE A" Page 1

1.

发明授权
Private branch exchange automatic number identification system 失效
Title translation: 私人交换机自动识别系统

公开(公告)号：US3346700A

公开(公告)日：1967-10-10

申请号：US38999364

申请日：1964-08-17

Applicant: BELL TELEPHONE LABOR INC

Inventor： ANDERSON HAROLD P , MCMAHON FRANK J , SCHARG GEORGE A , HARRY WINTER

IPC: B25B7/10 , H04Q3/62

CPC classification number: H04Q3/625

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