CA221433A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA221433A
CA221433A CA221433A CA221433DA CA221433A CA 221433 A CA221433 A CA 221433A CA 221433 A CA221433 A CA 221433A CA 221433D A CA221433D A CA 221433DA CA 221433 A CA221433 A CA 221433A
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
CA221433A
Other languages
English (en)
Inventor
Spaulding Irvine Frank
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 CA221433A publication Critical patent/CA221433A/fr
Expired legal-status Critical Current

Links

CA221433A Systeme telephonique Expired CA221433A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA221433T

Publications (1)

Publication Number Publication Date
CA221433A true CA221433A (fr) 1922-07-25

Family

ID=35117036

Family Applications (1)

Application Number Title Priority Date Filing Date
CA221433A Expired CA221433A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA221433A (fr)

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