CA512081A - Systemes de central automatique de telephone - Google Patents

Systemes de central automatique de telephone

Info

Publication number: CA512081A
Authority: CA; Canada
Prior art keywords: telephone exchange; automatic telephone; exchange systems; systems; automatic
Prior art date: 1955-04-19
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

CA512081A

Other languages

Inventor

W. Graybill Kenneth

Sengebusch Hans

Original Assignee

Northern Electric Co Ltd

Publication date

1955-04-19

1955-04-19 Application granted granted Critical

1955-04-19 Publication of CA512081A publication Critical patent/CA512081A/fr

Status Expired legal-status Critical Current

CA512081A Systemes de central automatique de telephone Expired CA512081A (fr)

Application Number	Priority Date	Filing Date	Title
CA512081T

Publication Number	Publication Date
CA512081A true CA512081A (fr)	1955-04-19

Application Number	Title	Priority Date	Filing Date
CA512081A Expired CA512081A (fr)			Systemes de central automatique de telephone

Country	Link
CA (1)	CA512081A (fr)

Publication	Publication Date	Title
CA512081A (fr)	1955-04-19	Systemes de central automatique de telephone
CA512082A (fr)	1955-04-19	Systeme de central automatique de telephone
CA513766A (fr)	1955-06-14	Systemes de telephone automatique
CA514583A (fr)	1955-07-12	Systemes de telephone automatique
CA516975A (fr)	1955-09-27	Systemes de telephone automatique
CA519763A (fr)	1955-12-20	Systemes de telephone automatique
AU209059B2 (en)	1956-02-23	Automatic telecommunication exchange
CA515244A (fr)	1955-08-02	Systemes d'echange de telecommunication
CA509545A (fr)	1955-01-25	Systeme de telephone automatique
AU1161755A (en)	1956-02-23	Automatic telecommunication exchange
AU202560B2 (en)	1955-10-13	Improvements in automatic telephone systems
CA512085A (fr)	1955-04-19	Systemes de telephone automatique a relais
CA537068A (fr)	1957-02-12	Systemes automatiques d'echange de telephone
CA510190A (fr)	1955-02-15	Systemes telephoniques
CA510665A (fr)	1955-03-08	Systemes telephoniques
CA511747A (fr)	1955-04-12	Systemes telephoniques
CA512083A (fr)	1955-04-19	Systemes telephoniques
CA512309A (fr)	1955-04-26	Systemes telephoniques
CA512310A (fr)	1955-04-26	Systemes telephoniques
CA512311A (fr)	1955-04-26	Systemes telephoniques
CA512312A (fr)	1955-04-26	Systemes telephoniques
CA519014A (fr)	1955-11-29	Systemes telephoniques
AU212106B2 (en)	1956-06-14	Improvements relating to automatic telephone systems
CA535173A (fr)	1957-01-01	Systemes a echange automatique de telecommunication
AU821255A (en)	1955-10-13	Improvements in automatic telephone systems