CA503173A - Systemes de telephone automatique - Google Patents

Systemes de telephone automatique

Info

Publication number: CA503173A
Authority: CA; Canada
Prior art keywords: telephone systems; automatic telephone; automatic; systems; telephone
Prior art date: 1954-05-25
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

CA503173A

Other languages

Inventor

E. Ostline John

Original Assignee

Northern Electric Co Ltd

Publication date

1954-05-25

1954-05-25 Application granted granted Critical

1954-05-25 Publication of CA503173A publication Critical patent/CA503173A/fr

Status Expired legal-status Critical Current

CA503173A Systemes de telephone automatique Expired CA503173A (fr)

Application Number	Priority Date	Filing Date	Title
CA503173T

Publication Number	Publication Date
CA503173A true CA503173A (fr)	1954-05-25

Application Number	Title	Priority Date	Filing Date
CA503173A Expired CA503173A (fr)			Systemes de telephone automatique

Country	Link
CA (1)	CA503173A (fr)

Publication	Publication Date	Title
CA503173A (fr)	1954-05-25	Systemes de telephone automatique
CA500362A (fr)	1954-03-02	Systemes de telephone automatique
CA500638A (fr)	1954-03-16	Systemes telephoniques automatiques
CA505485A (fr)	1954-08-31	Systemes de telephones automatiques
CA507617A (fr)	1954-11-23	Systemes telephoniques
CA501321A (fr)	1954-04-06	Systemes telephoniques
CA502236A (fr)	1954-05-11	Systemes telephoniques
CA502238A (fr)	1954-05-11	Systemes telephoniques
CA502239A (fr)	1954-05-11	Systemes telephoniques
CA506411A (fr)	1954-10-12	Systemes telephoniques
CA499356A (fr)	1954-01-19	Systemes telephoniques
AU201965B2 (en)	1955-03-31	Improvements relating to automatic telephone systems
CA507200A (fr)	1954-11-09	Systemes de telecommunication
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
CA501000A (fr)	1954-03-23	Systemes de manoeuvre automatique
CA502772A (fr)	1954-05-18	Systeme de facturage automatique d'appels telephoniques
AU346754A (en)	1955-03-31	Improvements relating to automatic telephone systems
CA501908A (fr)	1954-04-27	Systeme de recepteur telephonique
CA496610A (fr)	1953-10-06	Systemes de telephone automatique
CA493919A (fr)	1953-06-23	Systemes automatiques de telephone
CA494877A (fr)	1953-07-28	Systemes de telephone automatique
CA490689A (fr)	1953-02-17	Systemes automatiques de telephone