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Extract from the Register of European Patents

EP About this file: EP0400979

EP0400979 - Speakerphone with echo canceller-suppressor [Right-click to bookmark this link]
Former [1990/49]Echo canceler-suppressor speakerphone
[1995/43]
StatusNo opposition filed within time limit
Status updated on  30.08.1996
Database last updated on 24.04.2024
Most recent event   Tooltip30.08.1996No opposition filed within time limitpublished on 16.10.1996 [1996/42]
Applicant(s)For all designated states
AT&T Corp.
32 Avenue of the Americas
New York, NY 10013-2412 / US
[1990/49]
Inventor(s)01 / Ford, William Albert
4 Grant Street
Farmingdale, New Jersey 07727 / US
[1990/49]
Representative(s)Johnston, Kenneth Graham, et al
Lucent Technologies EUR-IP UK Ltd Unit 18, Core 3 Workzone Innova Business Park Electric Avenue
Enfield, EN3 7XB / GB
[N/P]
Former [1990/49]Johnston, Kenneth Graham, et al
AT&T (UK) LTD. AT&T Intellectual Property Division 5 Mornington Road
Woodford Green Essex, IG8 OTU / GB
Application number, filing date90305862.630.05.1990
[1990/49]
Priority number, dateUS1989035803030.05.1989         Original published format: US 358030
[1990/49]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0400979
Date:05.12.1990
Language:EN
[1990/49]
Type: A3 Search report 
No.:EP0400979
Date:22.04.1992
Language:EN
[1992/17]
Type: B1 Patent specification 
No.:EP0400979
Date:25.10.1995
Language:EN
[1995/43]
Search report(s)(Supplementary) European search report - dispatched on:EP03.03.1992
ClassificationIPC:H04M9/08, H04B3/20
[1990/49]
CPC:
H04M9/082 (EP,US); H04M9/08 (KR); H04B3/20 (EP,US);
H04M2201/26 (EP,US)
Designated contracting statesGB [1990/49]
TitleGerman:Fernsprechgerät mit Freisprecheinrichtung und Kompensator-Unterdrücker für Echos[1995/43]
English:Speakerphone with echo canceller-suppressor[1995/43]
French:Téléphone à haut-parleur avec annuleur-suppresseur d'échos[1995/43]
Former [1990/49]Fernsprechgerät mit Echounterdrückung
Former [1990/49]Echo canceler-suppressor speakerphone
Former [1990/49]Téléphone à haut-parleur suppresseur d'écho
Examination procedure08.10.1992Examination requested  [1992/50]
07.12.1994Despatch of communication of intention to grant (Approval: No)
12.04.1995Despatch of communication of intention to grant (Approval: later approval)
21.04.1995Communication of intention to grant the patent
06.07.1995Fee for grant paid
06.07.1995Fee for publishing/printing paid
Opposition(s)26.07.1996No opposition filed within time limit [1996/42]
Fees paidRenewal fee
19.05.1992Renewal fee patent year 03
17.05.1993Renewal fee patent year 04
12.05.1994Renewal fee patent year 05
12.05.1995Renewal fee patent year 06
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Documents cited:Search[X]GB2005968  (CIT ALCATEL);
 [X]WO8603912  (MOTOROLA INC [US]);
 [X]US4600815  (HORNA OTAKAR A [US]);
 [X]EP0282393  (CONNAN JEAN LOUIS [FR], et al)
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.