Expired European patentEurope
Display tube and colour television projection device comprising such a display tube
EP 0256579 B1 · Applicant: Philips Electronics N.V.
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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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 July 21, 1987 and granted October 31, 1990. A European patent lasts at most 20 years from filing, so its term ended July 21, 2007.
- 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 January 21, 2013.
- 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.
FiledJuly 21, 1987
PublishedFebruary 24, 1988
GrantedOctober 31, 1990
Term endedJuly 21, 2007
Application numberEP 87201392
Classification (CPC)H01J29/006
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.