CA220170A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA220170A
CA220170A CA220170A CA220170DA CA220170A CA 220170 A CA220170 A CA 220170A CA 220170 A CA220170 A CA 220170A CA 220170D A CA220170D A CA 220170DA CA 220170 A CA220170 A CA 220170A
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
CA220170A
Other languages
English (en)
Inventor
L. Goodrum Charles
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 WESTERN ELECTRIC Co
Original Assignee
INTERNATIONAL WESTERN ELECTRIC Co
Publication date
Application granted granted Critical
Publication of CA220170A publication Critical patent/CA220170A/fr
Expired legal-status Critical Current

Links

CA220170A Systeme telephonique Expired CA220170A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA220170T

Publications (1)

Publication Number Publication Date
CA220170A true CA220170A (fr) 1922-06-27

Family

ID=35114614

Family Applications (1)

Application Number Title Priority Date Filing Date
CA220170A Expired CA220170A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA220170A (fr)

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