CA415423A - Appareil de sous-central telephonique - Google Patents

Appareil de sous-central telephonique

Info

Publication number: CA415423A
Authority: CA; Canada
Prior art keywords: substation apparatus; telephone substation; telephone; substation
Prior art date: 1943-09-28
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

CA415423A

Other languages

Inventor

Frederick Obergfell Herbert

Original Assignee

Automatic Electric Laboratories Inc

Associated Telephone and Telegraph Co

Publication date

1943-09-28

1943-09-28 Application granted granted Critical

1943-09-28 Publication of CA415423A publication Critical patent/CA415423A/fr

Status Expired legal-status Critical Current

CA415423A Appareil de sous-central telephonique Expired CA415423A (fr)

Application Number	Priority Date	Filing Date	Title
CA415423T

Publication Number	Publication Date
CA415423A true CA415423A (fr)	1943-09-28

Application Number	Title	Priority Date	Filing Date
CA415423A Expired CA415423A (fr)			Appareil de sous-central telephonique

Country	Link
CA (1)	CA415423A (fr)

Publication	Publication Date	Title
CA415423A (fr)	1943-09-28	Appareil de sous-central telephonique
CA415346A (fr)	1943-09-21	Appareil de sous-central telephonique
CA415424A (fr)	1943-09-28	Appareil de sous-central telephonique
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
CA416045A (fr)	1943-10-26	Monotelephone
CA416046A (fr)	1943-10-26	Monotelephone
CA416352A (fr)	1943-11-09	Groupe telephonique
CA423185A (fr)	1944-10-10	Appareil de sous-station telephonique
CA424238A (fr)	1944-12-05	Appareil de sous-poste telephonique
CA409825A (fr)	1943-01-05	Systeme telephonique
CA415055A (fr)	1943-09-07	Systeme telephonique
CA415057A (fr)	1943-09-07	Systeme telephonique
CA416351A (fr)	1943-11-09	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