CA218944A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA218944A
CA218944A CA218944A CA218944DA CA218944A CA 218944 A CA218944 A CA 218944A CA 218944 A CA218944 A CA 218944A CA 218944D A CA218944D A CA 218944DA CA 218944 A CA218944 A CA 218944A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
telephone
exchange
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
CA218944A
Other languages
French (fr)
Inventor
B. Fowler Clarence
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 CA218944A publication Critical patent/CA218944A/en
Expired legal-status Critical Current

Links

CA218944A Telephone exchange system Expired CA218944A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA218944T

Publications (1)

Publication Number Publication Date
CA218944A true CA218944A (en) 1922-05-23

Family

ID=35113388

Family Applications (1)

Application Number Title Priority Date Filing Date
CA218944A Expired CA218944A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA218944A (en)

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