CA514091A - Telephone switchboard - Google Patents

Telephone switchboard

Info

Publication number
CA514091A
CA514091A CA514091A CA514091DA CA514091A CA 514091 A CA514091 A CA 514091A CA 514091 A CA514091 A CA 514091A CA 514091D A CA514091D A CA 514091DA CA 514091 A CA514091 A CA 514091A
Authority
CA
Canada
Prior art keywords
telephone switchboard
switchboard
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
CA514091A
Other languages
French (fr)
Inventor
Marble Clarence
F. Ruckdeschel Carl
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 CA514091A publication Critical patent/CA514091A/en
Expired legal-status Critical Current

Links

CA514091A Telephone switchboard Expired CA514091A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA514091T

Publications (1)

Publication Number Publication Date
CA514091A true CA514091A (en) 1955-06-28

Family

ID=35665176

Family Applications (1)

Application Number Title Priority Date Filing Date
CA514091A Expired CA514091A (en) Telephone switchboard

Country Status (1)

Country Link
CA (1) CA514091A (en)

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