CA679804A - Electronic telephone systems and ringing arrangements therefor - Google Patents

Electronic telephone systems and ringing arrangements therefor

Info

Publication number
CA679804A
CA679804A CA679804A CA679804DA CA679804A CA 679804 A CA679804 A CA 679804A CA 679804 A CA679804 A CA 679804A CA 679804D A CA679804D A CA 679804DA CA 679804 A CA679804 A CA 679804A
Authority
CA
Canada
Prior art keywords
telephone systems
electronic telephone
arrangements therefor
ringing
ringing arrangements
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
CA679804A
Inventor
C. Talcott Horace
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 CA679804A publication Critical patent/CA679804A/en
Expired legal-status Critical Current

Links

CA679804A Electronic telephone systems and ringing arrangements therefor Expired CA679804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA679804T

Publications (1)

Publication Number Publication Date
CA679804A true CA679804A (en) 1964-02-11

Family

ID=35980887

Family Applications (1)

Application Number Title Priority Date Filing Date
CA679804A Expired CA679804A (en) Electronic telephone systems and ringing arrangements therefor

Country Status (1)

Country Link
CA (1) CA679804A (en)

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