European application, no grantEurope
An active delay equalizer section having independently tunable circuite parameters and a circuit and method for correcting for phase distortion in a digital audio system
EP 0122939 A1 · Applicant: MEYER SOUND LABORATORIES, INC.
Overview
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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 24, 1983 and never granted as a European patent. Had it been granted, its 20-year term would have ended October 24, 2003.
- A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by April 24, 2009.
- We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledOctober 24, 1983
PublishedOctober 31, 1984
GrantedNever granted
Term endedOctober 24, 2003
Application numberEP 83903731
Classification (CPC)H04B3/147
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.