CA478353A - Systemes de telephone automatique - Google Patents

Systemes de telephone automatique

Info

Publication number: CA478353A
Authority: CA; Canada
Prior art keywords: telephone systems; automatic telephone; automatic; systems; telephone
Prior art date: 1951-11-06
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

CA478353A

Other languages

Inventor

E. Ostline John

Original Assignee

Northern Electric Co Ltd

Publication date

1951-11-06

1951-11-06 Application granted granted Critical

1951-11-06 Publication of CA478353A publication Critical patent/CA478353A/fr

Status Expired legal-status Critical Current

CA478353A Systemes de telephone automatique Expired CA478353A (fr)

Application Number	Priority Date	Filing Date	Title
CA478353T

Publication Number	Publication Date
CA478353A true CA478353A (fr)	1951-11-06

Application Number	Title	Priority Date	Filing Date
CA478353A Expired CA478353A (fr)			Systemes de telephone automatique

Country	Link
CA (1)	CA478353A (fr)

Publication	Publication Date	Title
CA478353A (fr)	1951-11-06	Systemes de telephone automatique
CA477173A (fr)	1951-09-25	Systemes de telephone automatique
CA470842A (fr)	1951-01-16	Systemes telephoniques
CA472098A (fr)	1951-03-13	Reseaux telephoniques
CA476517A (fr)	1951-08-28	Systemes telephoniques
CA477986A (fr)	1951-10-23	Systemes telephoniques
AU160933B2 (en)	1952-01-31	Improvements in automatic telephone systems
CA468357A (fr)	1950-09-26	Systemes de telephone automatique
CA471340A (fr)	1951-02-06	Systemes de telecommunication
AU655151A (en)	1952-01-31	Improvements in automatic telephone systems
CA476115A (fr)	1951-08-14	Systemes de transmission par telephone
CA489269A (fr)	1952-12-30	Systemes de telephones automatiques
CA478159A (fr)	1951-10-30	Systemes de central telephonique
AU155049B2 (en)	1951-04-09	Telecommunication system
CA471939A (fr)	1951-03-06	Systemes de guerites telephoniques
CA470777A (fr)	1951-01-09	Systemes de communication
CA470778A (fr)	1951-01-09	Systemes de communication
CA474073A (fr)	1951-05-29	Systemes de communication
CA474843A (fr)	1951-06-26	Systemes de communication
CA475541A (fr)	1951-07-24	Systemes de communication
CA478316A (fr)	1951-11-06	Systemes de communication
CA475019A (fr)	1951-07-03	Dispositifs d'arret automatique
CA472013A (fr)	1951-03-06	Systemes telephoniques a ondes porteuses a deux sens
CA471394A (fr)	1951-02-06	Systemes stabilisateurs de frequences
CA473443A (fr)	1951-05-08	Systemes de selecteurs d'ondes a syntonisation multiple