CA498515A - Call data recording automatic telephone system - Google Patents

Call data recording automatic telephone system

Info

Publication number
CA498515A
CA498515A CA498515A CA498515DA CA498515A CA 498515 A CA498515 A CA 498515A CA 498515 A CA498515 A CA 498515A CA 498515D A CA498515D A CA 498515DA CA 498515 A CA498515 A CA 498515A
Authority
CA
Canada
Prior art keywords
data recording
telephone system
call data
automatic telephone
recording automatic
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
CA498515A
Other languages
French (fr)
Inventor
L. Dimond Thomas
A. Wingardner Charles
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 CA498515A publication Critical patent/CA498515A/en
Expired legal-status Critical Current

Links

CA498515A Call data recording automatic telephone system Expired CA498515A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA498515T

Publications (1)

Publication Number Publication Date
CA498515A true CA498515A (en) 1953-12-15

Family

ID=35643956

Family Applications (1)

Application Number Title Priority Date Filing Date
CA498515A Expired CA498515A (en) Call data recording automatic telephone system

Country Status (1)

Country Link
CA (1) CA498515A (en)

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