CA501232A - Switching apparatus for telephone systems - Google Patents

Switching apparatus for telephone systems

Info

Publication number: CA501232A
Authority: CA; Canada
Prior art keywords: switching apparatus; telephone systems; telephone; systems; switching
Prior art date: 1954-04-06
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

CA501232A

Other languages

Inventor

Sengebusch Hans

Original Assignee

Automatic Electric Laboratories Inc

Publication date

1954-04-06

1954-04-06 Application granted granted Critical

1954-04-06 Publication of CA501232A publication Critical patent/CA501232A/en

Status Expired legal-status Critical Current

CA501232A Switching apparatus for telephone systems Expired CA501232A (en)

Application Number	Priority Date	Filing Date	Title
CA501232T

Publication Number	Publication Date
CA501232A true CA501232A (en)	1954-04-06

Application Number	Title	Priority Date	Filing Date
CA501232A Expired CA501232A (en)			Switching apparatus for telephone systems

Country	Link
CA (1)	CA501232A (en)

Publication	Publication Date	Title
CA501232A (en)	1954-04-06	Switching apparatus for telephone systems
CA502241A (en)	1954-05-11	Switching apparatus for telephone systems
CA501719A (en)	1954-04-20	Control apparatus for telephone systems
CA499204A (en)	1954-01-12	Switching apparatus
CA506412A (en)	1954-10-12	Connector switches for telephone systems
CA503174A (en)	1954-05-25	Substation circuits for telephone systems
CA506632A (en)	1954-10-19	Telecommunication switching systems
CA507055A (en)	1954-11-02	Electronic telephone switching system
CA499356A (en)	1954-01-19	Telephone systems
CA501321A (en)	1954-04-06	Telephone systems
CA502236A (en)	1954-05-11	Telephone systems
CA502238A (en)	1954-05-11	Telephone systems
CA502239A (en)	1954-05-11	Telephone systems
CA506411A (en)	1954-10-12	Telephone systems
CA507617A (en)	1954-11-23	Telephone systems
CA507729A (en)	1954-11-30	Toll switching telephone systems
CA507730A (en)	1954-11-30	Toll switching telephone systems
CA500087A (en)	1954-02-16	Telephone substation apparatus
CA503239A (en)	1954-05-25	Telephone substation apparatus
CA510190A (en)	1955-02-15	Telephone systems
CA510665A (en)	1955-03-08	Telephone systems
CA511747A (en)	1955-04-12	Telephone systems
CA512083A (en)	1955-04-19	Telephone systems
CA512309A (en)	1955-04-26	Telephone systems
CA512310A (en)	1955-04-26	Telephone systems