CA218678A - Systeme telephonique demi-automatique - Google Patents

Systeme telephonique demi-automatique

Info

Publication number
CA218678A
CA218678A CA218678A CA218678DA CA218678A CA 218678 A CA218678 A CA 218678A CA 218678 A CA218678 A CA 218678A CA 218678D A CA218678D A CA 218678DA CA 218678 A CA218678 A CA 218678A
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
CA218678A
Other languages
English (en)
Inventor
E. Lundell Alben
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 CA218678A publication Critical patent/CA218678A/fr
Expired legal-status Critical Current

Links

CA218678A Systeme telephonique demi-automatique Expired CA218678A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA218678T

Publications (1)

Publication Number Publication Date
CA218678A true CA218678A (fr) 1922-05-16

Family

ID=35113122

Family Applications (1)

Application Number Title Priority Date Filing Date
CA218678A Expired CA218678A (fr) Systeme telephonique demi-automatique

Country Status (1)

Country Link
CA (1) CA218678A (fr)

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