CA548744A - Automatic telephone systems - Google Patents

Automatic telephone systems

Info

Publication number
CA548744A
CA548744A CA548744A CA548744DA CA548744A CA 548744 A CA548744 A CA 548744A CA 548744 A CA548744 A CA 548744A CA 548744D A CA548744D A CA 548744DA CA 548744 A CA548744 A CA 548744A
Authority
CA
Canada
Prior art keywords
telephone systems
automatic telephone
automatic
systems
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
CA548744A
Other languages
French (fr)
Inventor
A. Chubb Alexander
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Publication date
Application granted granted Critical
Publication of CA548744A publication Critical patent/CA548744A/en
Expired legal-status Critical Current

Links

CA548744A Automatic telephone systems Expired CA548744A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA548744T

Publications (1)

Publication Number Publication Date
CA548744A true CA548744A (en) 1957-11-12

Family

ID=35710118

Family Applications (1)

Application Number Title Priority Date Filing Date
CA548744A Expired CA548744A (en) Automatic telephone systems

Country Status (1)

Country Link
CA (1) CA548744A (en)

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