CA366639A - Automatic or semi-automatic telephone exchange system - Google Patents

Automatic or semi-automatic telephone exchange system

Info

Publication number
CA366639A
CA366639A CA366639A CA366639DA CA366639A CA 366639 A CA366639 A CA 366639A CA 366639 A CA366639 A CA 366639A CA 366639D A CA366639D A CA 366639DA CA 366639 A CA366639 A CA 366639A
Authority
CA
Canada
Prior art keywords
automatic
semi
exchange system
telephone exchange
automatic telephone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA366639A
Other languages
French (fr)
Inventor
Clay Fielding Eric
Clifford Hartley George
Philip Goodwin Wright Esmond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA366639A publication Critical patent/CA366639A/en
Expired legal-status Critical Current

Links

CA366639A Automatic or semi-automatic telephone exchange system Expired CA366639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA366639T

Publications (1)

Publication Number Publication Date
CA366639A true CA366639A (en) 1937-06-08

Family

ID=35367708

Family Applications (1)

Application Number Title Priority Date Filing Date
CA366639A Expired CA366639A (en) Automatic or semi-automatic telephone exchange system

Country Status (1)

Country Link
CA (1) CA366639A (en)

Similar Documents

Publication Publication Date Title
CA366639A (en) Automatic or semi-automatic telephone exchange system
CA370115A (en) Automatic telephone system
CA370116A (en) Automatic telephone system
CA363690A (en) Telephone exchange system
CA367057A (en) Telephone exchange system
AU104630B2 (en) Improvements in automatic or semiautomatic telephone systems
CA349481A (en) Telephone exchange system
CA349482A (en) Telephone exchange system
CA351098A (en) Telephone exchange system
CA336323A (en) Automatic telephone system
CA320905A (en) Semi-automatic telephone system
CA325841A (en) Semi-automatic telephone system
AU104022B2 (en) Improvements in automatic telephone systems
AU104029B2 (en) Improvements in automatic telephone systems
AU332437A (en) Improvements in automatic or semiautomatic telephone systems
CA332064A (en) Semi-automatic telephone system
CA336322A (en) Semi-automatic telephone system
CA364930A (en) Automatic transmission system
CA335129A (en) Telephone exchange system
CA337716A (en) Telephone exchange system
CA332744A (en) Telephone exchange system
CA334399A (en) Telephone exchange system
CA334400A (en) Telephone exchange system
CA334401A (en) Telephone exchange system
CA332383A (en) Telephone exchange system