CA582746A - Systeme d'intercommunication automatique par telephone - Google Patents

Systeme d'intercommunication automatique par telephone

Info

Publication number
CA582746A
CA582746A CA582746A CA582746DA CA582746A CA 582746 A CA582746 A CA 582746A CA 582746 A CA582746 A CA 582746A CA 582746D A CA582746D A CA 582746DA CA 582746 A CA582746 A CA 582746A
Authority
CA
Canada
Prior art keywords
telephone system
intercommunication telephone
automatic intercommunication
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
CA582746A
Other languages
English (en)
Inventor
Joseph F. Houdek, Jr.
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 CA582746A publication Critical patent/CA582746A/fr
Expired legal-status Critical Current

Links

CA582746A Systeme d'intercommunication automatique par telephone Expired CA582746A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA582746T

Publications (1)

Publication Number Publication Date
CA582746A true CA582746A (fr) 1959-09-08

Family

ID=35762182

Family Applications (1)

Application Number Title Priority Date Filing Date
CA582746A Expired CA582746A (fr) Systeme d'intercommunication automatique par telephone

Country Status (1)

Country Link
CA (1) CA582746A (fr)

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