Special calling feature control arrangement for telephone switching systems

Invention Grant

US3445602A Special calling feature control arrangement for telephone switching systems 失效

Title translation: 电话切换系统的特殊呼叫特征控制装置

Patent Title: Special calling feature control arrangement for telephone switching systems
Patent Title (中): 电话切换系统的特殊呼叫特征控制装置
Application No.: US3445602D

Application Date: 1965-05-12
Publication No.: US3445602A

Publication Date: 1969-05-20
Inventor: GITTEN LAWRENCE J , NEWBY NEAL D
Applicant: BELL TELEPHONE LABOR INC
Assignee: Nokia Bell Labs
Current Assignee: Nokia Bell Labs
Priority: US7934260 1960-12-29; US45509565 1965-05-12
Main IPC: H04Q3/00
IPC: H04Q3/00 ; H04Q3/42 ; H04M3/00

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