CA381576A - Systeme telephonique a intercommunications - Google Patents

Systeme telephonique a intercommunications

Info

Publication number: CA381576A
Authority: CA; Canada
Prior art keywords: telephone system; intercommunicating telephone; intercommunicating; telephone
Prior art date: 1939-05-23
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

CA381576A

Other languages

Inventor

H. Voss John

Original Assignee

Northern Electric Co Ltd

Publication date

1939-05-23

1939-05-23 Application granted granted Critical

1939-05-23 Publication of CA381576A publication Critical patent/CA381576A/fr

Status Expired legal-status Critical Current

CA381576A Systeme telephonique a intercommunications Expired CA381576A (fr)

Application Number	Priority Date	Filing Date	Title
CA381576T

Publication Number	Publication Date
CA381576A true CA381576A (fr)	1939-05-23

Application Number	Title	Priority Date	Filing Date
CA381576A Expired CA381576A (fr)			Systeme telephonique a intercommunications

Country	Link
CA (1)	CA381576A (fr)

Publication	Publication Date	Title
CA381576A (fr)	1939-05-23	Systeme telephonique a intercommunications
CA379121A (fr)	1939-01-24	Systeme telephonique
CA379122A (fr)	1939-01-24	Systeme telephonique
CA379431A (fr)	1939-02-07	Systeme telephonique
CA379452A (fr)	1939-02-07	Systeme telephonique
CA379684A (fr)	1939-02-21	Systeme telephonique
CA379870A (fr)	1939-03-07	Systeme telephonique
CA380000A (fr)	1939-03-14	Systeme telephonique
CA380738A (fr)	1939-04-11	Systeme telephonique
CA380803A (fr)	1939-04-18	Systeme telephonique
CA381037A (fr)	1939-04-25	Systeme telephonique
CA381054A (fr)	1939-04-25	Systeme telephonique
CA381343A (fr)	1939-05-09	Systeme telephonique
CA382185A (fr)	1939-06-20	Systeme telephonique
CA383807A (fr)	1939-09-05	Systeme telephonique
CA383808A (fr)	1939-09-05	Systeme telephonique
CA383809A (fr)	1939-09-05	Systeme telephonique
CA383810A (fr)	1939-09-05	Systeme telephonique
CA383909A (fr)	1939-09-05	Systeme telephonique
CA384404A (fr)	1939-10-03	Systeme telephonique
CA385726A (fr)	1939-12-19	Systeme telephonique
CA381189A (fr)	1939-05-02	Systeme selecteur telephonique
CA385068A (fr)	1939-11-14	Systeme de transmission telephonique
CA385260A (fr)	1939-11-21	Systeme de signaux telephoniques
CA379423A (fr)	1939-02-07	Systeme de communications