CA452704A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA452704A
CA452704A CA452704A CA452704DA CA452704A CA 452704 A CA452704 A CA 452704A CA 452704 A CA452704 A CA 452704A CA 452704D A CA452704D A CA 452704DA CA 452704 A CA452704 A CA 452704A
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
CA452704A
Other languages
English (en)
Inventor
Langsford Clay David
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
Publication date
Application granted granted Critical
Publication of CA452704A publication Critical patent/CA452704A/fr
Expired legal-status Critical Current

Links

CA452704A Systeme telephonique Expired CA452704A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA452704T

Publications (1)

Publication Number Publication Date
CA452704A true CA452704A (fr) 1948-11-16

Family

ID=35570433

Family Applications (1)

Application Number Title Priority Date Filing Date
CA452704A Expired CA452704A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA452704A (fr)

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