CA215081A - Machine switching telephone exchange system - Google Patents

Machine switching telephone exchange system

Info

Publication number
CA215081A
CA215081A CA215081A CA215081DA CA215081A CA 215081 A CA215081 A CA 215081A CA 215081 A CA215081 A CA 215081A CA 215081D A CA215081D A CA 215081DA CA 215081 A CA215081 A CA 215081A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
machine switching
switching telephone
machine
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
CA215081A
Other languages
French (fr)
Inventor
L. Stokely Ray
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 CA215081A publication Critical patent/CA215081A/en
Expired legal-status Critical Current

Links

CA215081A Machine switching telephone exchange system Expired CA215081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA215081T

Publications (1)

Publication Number Publication Date
CA215081A true CA215081A (en) 1922-01-10

Family

ID=35109525

Family Applications (1)

Application Number Title Priority Date Filing Date
CA215081A Expired CA215081A (en) Machine switching telephone exchange system

Country Status (1)

Country Link
CA (1) CA215081A (en)

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