CA413649A - Systeme telephonique et commutateur - Google Patents

Systeme telephonique et commutateur

Info

Publication number
CA413649A
CA413649A CA413649A CA413649DA CA413649A CA 413649 A CA413649 A CA 413649A CA 413649 A CA413649 A CA 413649A CA 413649D A CA413649D A CA 413649DA CA 413649 A CA413649 A CA 413649A
Authority
CA
Canada
Prior art keywords
switch
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
CA413649A
Other languages
English (en)
Inventor
St. Clare William Graham John
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA413649A publication Critical patent/CA413649A/fr
Expired legal-status Critical Current

Links

CA413649A Systeme telephonique et commutateur Expired CA413649A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA413649T

Publications (1)

Publication Number Publication Date
CA413649A true CA413649A (fr) 1943-07-06

Family

ID=35522828

Family Applications (1)

Application Number Title Priority Date Filing Date
CA413649A Expired CA413649A (fr) Systeme telephonique et commutateur

Country Status (1)

Country Link
CA (1) CA413649A (fr)

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