CA455983A - Systeme de telephones haut-parleurs - Google Patents

Systeme de telephones haut-parleurs

Info

Publication number
CA455983A
CA455983A CA455983A CA455983DA CA455983A CA 455983 A CA455983 A CA 455983A CA 455983 A CA455983 A CA 455983A CA 455983D A CA455983D A CA 455983DA CA 455983 A CA455983 A CA 455983A
Authority
CA
Canada
Prior art keywords
telephone system
loudspeaking telephone
loudspeaking
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
CA455983A
Other languages
English (en)
Inventor
M. Giannini Gabriel
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 Laboratories Inc
Associated Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Associated Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA455983A publication Critical patent/CA455983A/fr
Expired legal-status Critical Current

Links

CA455983A Systeme de telephones haut-parleurs Expired CA455983A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA455983T

Publications (1)

Publication Number Publication Date
CA455983A true CA455983A (fr) 1949-04-19

Family

ID=35573724

Family Applications (1)

Application Number Title Priority Date Filing Date
CA455983A Expired CA455983A (fr) Systeme de telephones haut-parleurs

Country Status (1)

Country Link
CA (1) CA455983A (fr)

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