CA525830A - Interexchange switching telephone systems - Google Patents

Interexchange switching telephone systems

Info

Publication number
CA525830A
CA525830A CA525830A CA525830DA CA525830A CA 525830 A CA525830 A CA 525830A CA 525830 A CA525830 A CA 525830A CA 525830D A CA525830D A CA 525830DA CA 525830 A CA525830 A CA 525830A
Authority
CA
Canada
Prior art keywords
interexchange
telephone systems
switching telephone
switching
systems
Prior art date
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
CA525830A
Other languages
French (fr)
Inventor
Wicks John
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA525830A publication Critical patent/CA525830A/en
Expired legal-status Critical Current

Links

CA525830A Interexchange switching telephone systems Expired CA525830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA525830T

Publications (1)

Publication Number Publication Date
CA525830A true CA525830A (en) 1956-06-05

Family

ID=35679551

Family Applications (1)

Application Number Title Priority Date Filing Date
CA525830A Expired CA525830A (en) Interexchange switching telephone systems

Country Status (1)

Country Link
CA (1) CA525830A (en)

Similar Documents

Publication Publication Date Title
CA608330A (en) Switching devices
CA580092A (en) Switching systems
CA525830A (en) Interexchange switching telephone systems
CA530442A (en) Telecommunication systems
CA532978A (en) Telecommunication systems
CA533198A (en) Telecommunication cables
CA534874A (en) Switching system
CA523374A (en) Switching arrangement
CA521240A (en) Toll switching systems
CA521394A (en) Telephone systems
CA521856A (en) Telephone systems
CA522332A (en) Telephone systems
CA524594A (en) Telephone systems
CA524631A (en) Telephone systems
CA525662A (en) Telephone systems
CA530739A (en) Telephone systems
CA533592A (en) Telephone systems
CA531988A (en) Electrical switching system
CA506632A (en) Telecommunication switching systems
CA527080A (en) Telephone answering systems
CA533984A (en) Telephone system
CA514094A (en) Telephone systems employing non-numerical switches
AU212541B2 (en) Improvements relating to electrical switching systems
CA528224A (en) Pulse electrical telecommunication systems
CA522215A (en) Intercommunication telephone systems