CA185874A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA185874A
CA185874A CA000185874A CA185874DA CA185874A CA 185874 A CA185874 A CA 185874A CA 000185874 A CA000185874 A CA 000185874A CA 185874D A CA185874D A CA 185874DA CA 185874 A CA185874 A CA 185874A
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
CA000185874A
Other languages
French (fr)
Inventor
John Newberry Reynolds
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 CA185874A publication Critical patent/CA185874A/en
Expired legal-status Critical Current

Links

CA000185874A 1917-07-23 1917-07-23 Telephone exchange system Expired CA185874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA185874T 1917-07-23

Publications (1)

Publication Number Publication Date
CA185874A true CA185874A (en) 1918-07-30

Family

ID=45305526

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000185874A Expired CA185874A (en) 1917-07-23 1917-07-23 Telephone exchange system

Country Status (1)

Country Link
CA (1) CA185874A (en)

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