CA185873A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA185873A
CA185873A CA000185873A CA185873DA CA185873A CA 185873 A CA185873 A CA 185873A CA 000185873 A CA000185873 A CA 000185873A CA 185873D A CA185873D A CA 185873DA CA 185873 A CA185873 A CA 185873A
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
CA000185873A
Other languages
French (fr)
Inventor
Alben E. Lundell
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 CA185873A publication Critical patent/CA185873A/en
Expired legal-status Critical Current

Links

CA000185873A 1917-07-23 1917-07-23 Telephone exchange system Expired CA185873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA185873T 1917-07-23

Publications (1)

Publication Number Publication Date
CA185873A true CA185873A (en) 1918-07-30

Family

ID=45305525

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000185873A Expired CA185873A (en) 1917-07-23 1917-07-23 Telephone exchange system

Country Status (1)

Country Link
CA (1) CA185873A (en)

Similar Documents

Publication Publication Date Title
CA187344A (en) Telephone exchange system
CA173704A (en) Telephone exchange system
CA177248A (en) Telephone exchange system
CA182429A (en) Telephone exchange system
CA182585A (en) Telephone exchange system
CA182586A (en) Telephone exchange system
CA182588A (en) Telephone exchange system
CA182758A (en) Telephone exchange system
CA183517A (en) Telephone exchange system
CA185169A (en) Telephone exchange system
CA185565A (en) Telephone exchange system
CA185566A (en) Telephone exchange system
CA185873A (en) Telephone exchange system
CA185874A (en) Telephone exchange system
CA186088A (en) Telephone exchange system
CA186835A (en) Telephone exchange system
CA186929A (en) Telephone exchange system
CA187175A (en) Telephone exchange system
CA187551A (en) Telephone exchange system
CA188287A (en) Telephone exchange system
CA189211A (en) Telephone exchange system
CA185878A (en) Telephone exchange
CA177357A (en) Telephone system
CA179339A (en) Telephone system
CA179488A (en) Telephone system