CA515309A - Audible signal for field telephone set - Google Patents

Audible signal for field telephone set

Info

Publication number
CA515309A
CA515309A CA515309A CA515309DA CA515309A CA 515309 A CA515309 A CA 515309A CA 515309 A CA515309 A CA 515309A CA 515309D A CA515309D A CA 515309DA CA 515309 A CA515309 A CA 515309A
Authority
CA
Canada
Prior art keywords
telephone set
audible signal
field telephone
field
audible
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
CA515309A
Other languages
French (fr)
Inventor
Kalin Walter
R. Power James
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 CA515309A publication Critical patent/CA515309A/en
Expired legal-status Critical Current

Links

CA515309A Audible signal for field telephone set Expired CA515309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA515309T

Publications (1)

Publication Number Publication Date
CA515309A true CA515309A (en) 1955-08-02

Family

ID=35666400

Family Applications (1)

Application Number Title Priority Date Filing Date
CA515309A Expired CA515309A (en) Audible signal for field telephone set

Country Status (1)

Country Link
CA (1) CA515309A (en)

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