FR938865A - Improvements to automatic telephone systems - Google Patents

Improvements to automatic telephone systems

Info

Publication number
FR938865A
FR938865A FR938865DA FR938865A FR 938865 A FR938865 A FR 938865A FR 938865D A FR938865D A FR 938865DA FR 938865 A FR938865 A FR 938865A
Authority
FR
France
Prior art keywords
telephone systems
automatic telephone
automatic
systems
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
Other languages
French (fr)
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR938865A publication Critical patent/FR938865A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/38—Charging, billing or metering by apparatus other than mechanical step-by-step counter type
FR938865D 1940-05-22 1946-11-29 Improvements to automatic telephone systems Expired FR938865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US618900XA 1940-05-22 1940-05-22

Publications (1)

Publication Number Publication Date
FR938865A true FR938865A (en) 1948-10-27

Family

ID=22038797

Family Applications (1)

Application Number Title Priority Date Filing Date
FR938865D Expired FR938865A (en) 1940-05-22 1946-11-29 Improvements to automatic telephone systems

Country Status (2)

Country Link
FR (1) FR938865A (en)
GB (1) GB618900A (en)

Also Published As

Publication number Publication date
GB618900A (en) 1949-03-01

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