CA494857A - Electronic telephone exchange - Google Patents

Electronic telephone exchange

Info

Publication number
CA494857A
CA494857A CA494857A CA494857DA CA494857A CA 494857 A CA494857 A CA 494857A CA 494857 A CA494857 A CA 494857A CA 494857D A CA494857D A CA 494857DA CA 494857 A CA494857 A CA 494857A
Authority
CA
Canada
Prior art keywords
telephone exchange
electronic telephone
electronic
exchange
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
CA494857A
Other languages
French (fr)
Inventor
M. Deloraine Edmond
H. Ransom David
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 Standard Electric Corp
Original Assignee
International Standard Electric Corp
Publication date
Application granted granted Critical
Publication of CA494857A publication Critical patent/CA494857A/en
Expired legal-status Critical Current

Links

CA494857A Electronic telephone exchange Expired CA494857A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA494857T

Publications (1)

Publication Number Publication Date
CA494857A true CA494857A (en) 1953-07-28

Family

ID=35640260

Family Applications (1)

Application Number Title Priority Date Filing Date
CA494857A Expired CA494857A (en) Electronic telephone exchange

Country Status (1)

Country Link
CA (1) CA494857A (en)

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