CA524594A - Systemes de telephone - Google Patents

Systemes de telephone

Info

Publication number: CA524594A
Authority: CA; Canada
Prior art keywords: telephone systems; telephone; systems
Prior art date: 1956-05-01
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

CA524594A

Other languages

Inventor

B. Mitchell Len

Original Assignee

Northern Electric Co Ltd

Publication date

1956-05-01

1956-05-01 Application granted granted Critical

1956-05-01 Publication of CA524594A publication Critical patent/CA524594A/fr

Status Expired legal-status Critical Current

CA524594A Systemes de telephone Expired CA524594A (fr)

Application Number	Priority Date	Filing Date	Title
CA524594T

Publication Number	Publication Date
CA524594A true CA524594A (fr)	1956-05-01

Application Number	Title	Priority Date	Filing Date
CA524594A Expired CA524594A (fr)			Systemes de telephone

Country	Link
CA (1)	CA524594A (fr)

Publication	Publication Date	Title
CA580092A (fr)	1959-07-21	Systemes de commutateur
CA530739A (fr)	1956-09-25	Systemes telephoniques
CA521856A (fr)	1956-02-14	Systemes de telephone
CA522332A (fr)	1956-03-06	Systemes de telephone
CA524594A (fr)	1956-05-01	Systemes de telephone
CA525662A (fr)	1956-05-29	Systemes telephoniques
CA521394A (fr)	1956-01-31	Systemes de telephone
CA533592A (fr)	1956-11-20	Systemes telephoniques
CA524631A (fr)	1956-05-01	Systemes de telephone
CA533984A (fr)	1956-12-04	Systeme de telephone
CA530442A (fr)	1956-09-18	Systemes de telecommunication
CA532978A (fr)	1956-11-13	Systemes de telecommunication
CA527080A (fr)	1956-07-03	Systeme de reponse pour telephone
CA522215A (fr)	1956-02-28	Systemes d'intercommunication par telephone
CA532449A (fr)	1956-10-30	Systemes de telephone automatique
CA524054A (fr)	1956-04-17	Systemes de telephone automatique
CA522080A (fr)	1956-02-21	Systemes de courant a pulsations
AU213260B2 (en)	1956-08-09	Improvements in telephone systems
AU205812B2 (en)	1956-07-19	Improvements in telephone systems
AU209194B2 (en)	1957-03-21	Improvements in telephone systems
AU210879B2 (en)	1957-03-07	Improvements in telephone systems
AU212284B2 (en)	1956-10-18	Improvements in telephone systems
AU215161B2 (en)	1957-05-16	Improvements in telephone systems
AU215332B2 (en)	1957-03-07	Improvements in telephone systems
CA546624A (fr)	1957-09-24	Systemes de telephone