CA455983A - Systeme de telephones haut-parleurs - Google Patents

Systeme de telephones haut-parleurs

Info

Publication number: CA455983A
Authority: CA; Canada
Prior art keywords: telephone system; loudspeaking telephone; loudspeaking; telephone
Prior art date: 1949-04-19
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

CA455983A

Other languages

Inventor

M. Giannini Gabriel

Original Assignee

Automatic Electric Laboratories Inc

Associated Electric Laboratories Inc

Publication date

1949-04-19

1949-04-19 Application granted granted Critical

1949-04-19 Publication of CA455983A publication Critical patent/CA455983A/fr

Status Expired legal-status Critical Current

CA455983A Systeme de telephones haut-parleurs Expired CA455983A (fr)

Application Number	Priority Date	Filing Date	Title
CA455983T

Publication Number	Publication Date
CA455983A true CA455983A (fr)	1949-04-19

Application Number	Title	Priority Date	Filing Date
CA455983A Expired CA455983A (fr)			Systeme de telephones haut-parleurs

Country	Link
CA (1)	CA455983A (fr)

Publication	Publication Date	Title
CA457823A (fr)	1949-07-05	Systeme telephonique
CA454136A (fr)	1949-01-18	Systeme telephonique
CA457980A (fr)	1949-07-05	Systeme telephonique
CA459027A (fr)	1949-08-16	Systeme telephonique
CA454334A (fr)	1949-01-25	Systeme telephonique
CA460236A (fr)	1949-10-11	Systeme telephonique
CA458674A (fr)	1949-08-02	Systeme telephonique
CA459993A (fr)	1949-09-27	Systeme telephonique
CA456764A (fr)	1949-05-17	Systeme telephonique
CA461789A (fr)	1949-12-13	Systeme telephonique
CA459026A (fr)	1949-08-16	Systeme telephonique
CA455720A (fr)	1949-04-05	Systeme telephonique
CA453798A (fr)	1949-01-04	Systeme telephonique
CA459549A (fr)	1949-09-06	Systeme de telephone a postes groupes
AU148169B2 (en)	1949-11-10	Telephone set
CA456997A (fr)	1949-05-31	Accessoire pour base de monotelephone
AU2978049A (en)	1949-11-10	Telephone set
CA460752A (fr)	1949-11-01	Systeme de telecommunication
AU145514B2 (en)	1949-04-07	Telephonic switching system
CA457207A (fr)	1949-06-07	Systeme de telephone automatique
CA460237A (fr)	1949-10-11	Systeme de telephone automatique
CA461318A (fr)	1949-11-22	Systeme de telephone automatique
CA456451A (fr)	1949-05-03	Systeme de telephone automatique
CA455024A (fr)	1949-03-08	Systeme de central telephonique
CA459020A (fr)	1949-08-16	Transmetteur d'appels telephoniques