CA450001A - Systeme de telephone a postes groupes - Google Patents

Systeme de telephone a postes groupes

Info

Publication number
CA450001A
CA450001A CA450001A CA450001DA CA450001A CA 450001 A CA450001 A CA 450001A CA 450001 A CA450001 A CA 450001A CA 450001D A CA450001D A CA 450001DA CA 450001 A CA450001 A CA 450001A
Authority
CA
Canada
Prior art keywords
ringing
party line
universal system
universal
party
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
CA450001A
Other languages
English (en)
Inventor
Deakin Gerald
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 Standard Electric Corp
Original Assignee
International Standard Electric Corp
Publication date
Application granted granted Critical
Publication of CA450001A publication Critical patent/CA450001A/fr
Expired legal-status Critical Current

Links

CA450001A Systeme de telephone a postes groupes Expired CA450001A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA450001T

Publications (1)

Publication Number Publication Date
CA450001A true CA450001A (fr) 1948-07-20

Family

ID=35567715

Family Applications (1)

Application Number Title Priority Date Filing Date
CA450001A Expired CA450001A (fr) Systeme de telephone a postes groupes

Country Status (1)

Country Link
CA (1) CA450001A (fr)

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