CA188618A - Telephone exchange - Google Patents

Telephone exchange

Info

Publication number
CA188618A
CA188618A CA000188618A CA188618DA CA188618A CA 188618 A CA188618 A CA 188618A CA 000188618 A CA000188618 A CA 000188618A CA 188618D A CA188618D A CA 188618DA CA 188618 A CA188618 A CA 188618A
Authority
CA
Canada
Prior art keywords
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
CA000188618A
Other languages
French (fr)
Inventor
James L. Mcquarrie
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA188618A publication Critical patent/CA188618A/en
Expired legal-status Critical Current

Links

CA000188618A 1918-02-15 1918-02-15 Telephone exchange Expired CA188618A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA188618T 1918-02-15

Publications (1)

Publication Number Publication Date
CA188618A true CA188618A (en) 1919-02-11

Family

ID=45308269

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000188618A Expired CA188618A (en) 1918-02-15 1918-02-15 Telephone exchange

Country Status (1)

Country Link
CA (1) CA188618A (en)

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