CA201067A - Machine switching telephone system - Google Patents

Machine switching telephone system

Info

Publication number
CA201067A
CA201067A CA201067A CA201067DA CA201067A CA 201067 A CA201067 A CA 201067A CA 201067 A CA201067 A CA 201067A CA 201067D A CA201067D A CA 201067DA CA 201067 A CA201067 A CA 201067A
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
CA201067A
Other languages
French (fr)
Inventor
Polinkowsky Lipa
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 CA201067A publication Critical patent/CA201067A/en
Expired legal-status Critical Current

Links

CA201067A Machine switching telephone system Expired CA201067A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA201067T

Publications (1)

Publication Number Publication Date
CA201067A true CA201067A (en) 1920-06-15

Family

ID=35075503

Family Applications (1)

Application Number Title Priority Date Filing Date
CA201067A Expired CA201067A (en) Machine switching telephone system

Country Status (1)

Country Link
CA (1) CA201067A (en)

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