CA512309A - Systemes telephoniques - Google Patents

Systemes telephoniques

Info

Publication number: CA512309A
Authority: CA; Canada
Prior art keywords: telephone systems; telephone; systems
Prior art date: 1955-04-26
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

CA512309A

Other languages

Inventor

J. Bartha Stephan

Original Assignee

Northern Electric Co Ltd

Publication date

1955-04-26

1955-04-26 Application granted granted Critical

1955-04-26 Publication of CA512309A publication Critical patent/CA512309A/fr

Status Expired legal-status Critical Current

CA512309A Systemes telephoniques Expired CA512309A (fr)

Application Number	Priority Date	Filing Date	Title
CA512309T

Publication Number	Publication Date
CA512309A true CA512309A (fr)	1955-04-26

Application Number	Title	Priority Date	Filing Date
CA512309A Expired CA512309A (fr)			Systemes telephoniques

Country	Link
CA (1)	CA512309A (fr)

Publication	Publication Date	Title
CA512309A (fr)	1955-04-26	Systemes telephoniques
CA510190A (fr)	1955-02-15	Systemes telephoniques
CA510665A (fr)	1955-03-08	Systemes telephoniques
CA511747A (fr)	1955-04-12	Systemes telephoniques
CA512083A (fr)	1955-04-19	Systemes telephoniques
CA512310A (fr)	1955-04-26	Systemes telephoniques
CA512311A (fr)	1955-04-26	Systemes telephoniques
CA512312A (fr)	1955-04-26	Systemes telephoniques
CA519014A (fr)	1955-11-29	Systemes telephoniques
CA508827A (fr)	1955-01-04	Systemes de communication
CA512163A (fr)	1955-04-26	Systemes de communication
CA512301A (fr)	1955-04-26	Systemes telephoniques d'intercommunication
CA512519A (fr)	1955-05-03	Systemes de telephone a postes groupes
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
AU208819B2 (en)	1956-03-22	Improvements in telephone systems
AU209625B2 (en)	1956-01-26	Improvements in telephone systems
AU202974B2 (en)	1955-09-22	Improvements in telephone systems
AU204681B2 (en)	1956-04-26	Improvements in telephone systems
AU207899B2 (en)	1955-10-13	Improvements in telephone systems
AU211197B2 (en)	1956-01-05	Improvements in telephone systems
AU205630B2 (en)	1955-11-10	Improvements in telephone systems
AU211198B2 (en)	1956-01-05	Improvements in telecommunication systems