CA202308A - Machine switching telephone system - Google Patents

Machine switching telephone system

Info

Publication number
CA202308A
CA202308A CA202308A CA202308DA CA202308A CA 202308 A CA202308 A CA 202308A CA 202308 A CA202308 A CA 202308A CA 202308D A CA202308D A CA 202308DA CA 202308 A CA202308 A CA 202308A
Authority
CA
Canada
Prior art keywords
telephone system
machine switching
switching telephone
machine
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
CA202308A
Other languages
French (fr)
Inventor
Deakin Gerald
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
AT&T Corp
Original Assignee
INTERNATIONAL WESTERN ELECTRIC CO
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA202308A publication Critical patent/CA202308A/en
Expired legal-status Critical Current

Links

CA202308A Machine switching telephone system Expired CA202308A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA202308T

Publications (1)

Publication Number Publication Date
CA202308A true CA202308A (en) 1920-07-27

Family

ID=35076744

Family Applications (1)

Application Number Title Priority Date Filing Date
CA202308A Expired CA202308A (en) Machine switching telephone system

Country Status (1)

Country Link
CA (1) CA202308A (en)

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