CA575640A - Automatic telephone system - Google Patents

Automatic telephone system

Info

Publication number
CA575640A
CA575640A CA575640A CA575640DA CA575640A CA 575640 A CA575640 A CA 575640A CA 575640 A CA575640 A CA 575640A CA 575640D A CA575640D A CA 575640DA CA 575640 A CA575640 A CA 575640A
Authority
CA
Canada
Prior art keywords
telephone system
automatic telephone
automatic
telephone
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
CA575640A
Other languages
French (fr)
Inventor
H. Blashfield William
A. Harris Ben
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.)
North Electric Co
Original Assignee
North Electric Co
Publication date
Application granted granted Critical
Publication of CA575640A publication Critical patent/CA575640A/en
Expired legal-status Critical Current

Links

CA575640A Automatic telephone system Expired CA575640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA575640T

Publications (1)

Publication Number Publication Date
CA575640A true CA575640A (en) 1959-05-12

Family

ID=35751496

Family Applications (1)

Application Number Title Priority Date Filing Date
CA575640A Expired CA575640A (en) Automatic telephone system

Country Status (1)

Country Link
CA (1) CA575640A (en)

Similar Documents

Publication Publication Date Title
CA568814A (en) Automatic telephone system
CA575640A (en) Automatic telephone system
CA578530A (en) Automatic telephone system
CA584908A (en) Automatic telephone system
CA569198A (en) Automatic telephone systems
CA578982A (en) Automatic telephone systems
CA583278A (en) Automatic telephone systems
CA584006A (en) Automatic telephone systems
CA584178A (en) Automatic telephone systems
CA585771A (en) Automatic telephone systems
CA586768A (en) Automatic telephone systems
CA587624A (en) Automatic telephone systems
CA586477A (en) Automatic telephone answering system
AU242495B2 (en) Automatic telephone calling system
CA582746A (en) Automatic intercommunication telephone system
CA571078A (en) Telephone system
CA562242A (en) Automatic telephone system
AU250434B2 (en) Improvements in automatic telephone systems
AU5443159A (en) Automatic telephone calling system
CA572855A (en) Telephone systems
CA574965A (en) Telephone systems
CA581156A (en) Telephone systems
CA587164A (en) Telephone systems
CA588334A (en) Telephone systems
CA543973A (en) Automatic telephone system