CA411945A - Appareil commutateur telephonique - Google Patents

Appareil commutateur telephonique

Info

Publication number: CA411945A
Authority: CA; Canada
Prior art keywords: switching apparatus; telephone switching; telephone; switching
Prior art date: 1943-04-20
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

CA411945A

Other languages

Inventor

Frederick Obergfell Herbert

Original Assignee

Northern Electric Co Ltd

Publication date

1943-04-20

1943-04-20 Application granted granted Critical

1943-04-20 Publication of CA411945A publication Critical patent/CA411945A/fr

Status Expired legal-status Critical Current

CA411945A Appareil commutateur telephonique Expired CA411945A (fr)

Application Number	Priority Date	Filing Date	Title
CA411945T

Publication Number	Publication Date
CA411945A true CA411945A (fr)	1943-04-20

Application Number	Title	Priority Date	Filing Date
CA411945A Expired CA411945A (fr)			Appareil commutateur telephonique

Country	Link
CA (1)	CA411945A (fr)

Publication	Publication Date	Title
CA411945A (fr)	1943-04-20	Appareil commutateur telephonique
CA411946A (fr)	1943-04-20	Appareil commutateur telephonique
CA413013A (fr)	1943-06-08	Appareil commutateur de telephone
CA413014A (fr)	1943-06-08	Appareil commutateur de telephone
CA417045A (fr)	1943-12-14	Appareil d'interrupteur electrique
CA416795A (fr)	1943-11-30	Appareil commutateur telegraphique
CA415346A (fr)	1943-09-21	Appareil de sous-central telephonique
CA415423A (fr)	1943-09-28	Appareil de sous-central telephonique
CA415424A (fr)	1943-09-28	Appareil de sous-central telephonique
CA414258A (fr)	1943-08-03	Appareil commutateur electrique
CA416045A (fr)	1943-10-26	Monotelephone
CA416046A (fr)	1943-10-26	Monotelephone
CA416352A (fr)	1943-11-09	Groupe telephonique
CA412794A (fr)	1943-05-25	Commutateur selectif de telephone
CA409235A (fr)	1942-12-08	Appareil commutateur telephonique
CA409825A (fr)	1943-01-05	Systeme telephonique
CA409856A (fr)	1943-01-05	Systeme telephonique
CA409858A (fr)	1943-01-05	Systeme telephonique
CA409859A (fr)	1943-01-05	Systeme telephonique
CA410075A (fr)	1943-01-19	Systeme telephonique
CA410266A (fr)	1943-01-26	Systeme telephonique
CA410351A (fr)	1943-02-02	Systeme telephonique
CA411301A (fr)	1943-03-23	Systeme telephonique
CA411343A (fr)	1943-03-23	Systeme telephonique
CA411409A (fr)	1943-03-30	Systeme telephonique