CA221432A - Telephone switchboard apparatus - Google Patents

Telephone switchboard apparatus

Info

Publication number
CA221432A
CA221432A CA221432A CA221432DA CA221432A CA 221432 A CA221432 A CA 221432A CA 221432 A CA221432 A CA 221432A CA 221432D A CA221432D A CA 221432DA CA 221432 A CA221432 A CA 221432A
Authority
CA
Canada
Prior art keywords
telephone switchboard
switchboard apparatus
telephone
switchboard
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
CA221432A
Other languages
French (fr)
Inventor
Freile Bruce
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.)
INTERNATIONAL WESTERN ELECTRIC Co
Original Assignee
INTERNATIONAL WESTERN ELECTRIC Co
Publication date
Application granted granted Critical
Publication of CA221432A publication Critical patent/CA221432A/en
Expired legal-status Critical Current

Links

CA221432A Telephone switchboard apparatus Expired CA221432A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA221432T

Publications (1)

Publication Number Publication Date
CA221432A true CA221432A (en) 1922-07-25

Family

ID=35117035

Family Applications (1)

Application Number Title Priority Date Filing Date
CA221432A Expired CA221432A (en) Telephone switchboard apparatus

Country Status (1)

Country Link
CA (1) CA221432A (en)

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