CA424315A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA424315A
CA424315A CA424315A CA424315DA CA424315A CA 424315 A CA424315 A CA 424315A CA 424315 A CA424315 A CA 424315A CA 424315D A CA424315D A CA 424315DA CA 424315 A CA424315 A CA 424315A
Authority
CA
Canada
Prior art keywords
telephone system
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
CA424315A
Other languages
English (en)
Inventor
Frank Stehlik Rudolph
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.)
Associated Telephone and Telegraph Co
Original Assignee
Automatic Electric Laboratories Inc
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA424315A publication Critical patent/CA424315A/fr
Expired legal-status Critical Current

Links

CA424315A Systeme telephonique Expired CA424315A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA424315T

Publications (1)

Publication Number Publication Date
CA424315A true CA424315A (fr) 1944-12-12

Family

ID=35535330

Family Applications (1)

Application Number Title Priority Date Filing Date
CA424315A Expired CA424315A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA424315A (fr)

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