CA199203A - Systeme telephonique demi-automatique - Google Patents

Systeme telephonique demi-automatique

Info

Publication number
CA199203A
CA199203A CA199203A CA199203DA CA199203A CA 199203 A CA199203 A CA 199203A CA 199203 A CA199203 A CA 199203A CA 199203D A CA199203D A CA 199203DA CA 199203 A CA199203 A CA 199203A
Authority
CA
Canada
Prior art keywords
semi
telephone system
automatic telephone
automatic
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
CA199203A
Other languages
English (en)
Inventor
J. Seymour Arthur
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 Electric Co
Original Assignee
Automatic Electric Co
Publication date
Application granted granted Critical
Publication of CA199203A publication Critical patent/CA199203A/fr
Expired legal-status Critical Current

Links

CA199203A Systeme telephonique demi-automatique Expired CA199203A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA199203T

Publications (1)

Publication Number Publication Date
CA199203A true CA199203A (fr) 1920-04-13

Family

ID=35073640

Family Applications (1)

Application Number Title Priority Date Filing Date
CA199203A Expired CA199203A (fr) Systeme telephonique demi-automatique

Country Status (1)

Country Link
CA (1) CA199203A (fr)

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