CA491419A - Loud speaking telephone set - Google Patents

Loud speaking telephone set

Info

Publication number
CA491419A
CA491419A CA491419A CA491419DA CA491419A CA 491419 A CA491419 A CA 491419A CA 491419 A CA491419 A CA 491419A CA 491419D A CA491419D A CA 491419DA CA 491419 A CA491419 A CA 491419A
Authority
CA
Canada
Prior art keywords
telephone set
loud speaking
speaking telephone
loud
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
CA491419A
Other languages
French (fr)
Inventor
K. Potter Ralph
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA491419A publication Critical patent/CA491419A/en
Expired legal-status Critical Current

Links

CA491419A Loud speaking telephone set Expired CA491419A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA491419T

Publications (1)

Publication Number Publication Date
CA491419A true CA491419A (en) 1953-03-17

Family

ID=35631161

Family Applications (1)

Application Number Title Priority Date Filing Date
CA491419A Expired CA491419A (en) Loud speaking telephone set

Country Status (1)

Country Link
CA (1) CA491419A (en)

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