CA386496A - Telephone system - Google Patents

Telephone system

Info

Publication number: CA386496A
Authority: CA; Canada
Prior art keywords: telephone system; telephone
Prior art date: 1940-01-23
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

CA386496A

Other languages

Inventor

S. Peterson Edward

Original Assignee

Northern Electric Co Ltd

Publication date

1940-01-23

1940-01-23 Application granted granted Critical

1940-01-23 Publication of CA386496A publication Critical patent/CA386496A/en

Status Expired legal-status Critical Current

CA386496A Telephone system Expired CA386496A (en)

Application Number	Priority Date	Filing Date	Title
CA386496T

Publication Number	Publication Date
CA386496A true CA386496A (en)	1940-01-23

Application Number	Title	Priority Date	Filing Date
CA386496A Expired CA386496A (en)			Telephone system

Country	Link
CA (1)	CA386496A (en)

Publication	Publication Date	Title
CA386496A (en)	1940-01-23	Telephone system
CA386497A (en)	1940-01-23	Telephone system
CA390877A (en)	1940-08-20	Telephone system
CA389910A (en)	1940-07-09	Telephone set
CA390395A (en)	1940-07-30	Communication system
CA386297A (en)	1940-01-16	Automatic telephone system
CA386223A (en)	1940-01-09	Telegraph system
AU112801B2 (en)	1941-01-09	Improvements relating to telephone systems
AU112307B2 (en)	1941-01-23	Improvements in telephone systems
AU112373B2 (en)	1941-01-30	Improvements in telephone systems
AU112728B2 (en)	1941-03-27	Improvements in telephone systems
AU113289B2 (en)	1941-06-26	Improvements in telephone systems
AU119295B2 (en)	1944-12-14	Improvements in telephone systems
CA399200A (en)	1941-09-09	Telephone system
CA401008A (en)	1941-11-25	Telephone system
CA397941A (en)	1941-07-15	Telephone system
CA398184A (en)	1941-07-22	Telephone system
CA394870A (en)	1941-02-25	Telephone system
CA401611A (en)	1941-12-23	Telephone system
CA398253A (en)	1941-07-29	Telephone system
CA398255A (en)	1941-07-29	Telephone system
CA398256A (en)	1941-07-29	Telephone system
CA398569A (en)	1941-08-12	Telephone system
CA398988A (en)	1941-09-02	Telephone system
CA394866A (en)	1941-02-25	Telephone system