European application, no grantEurope
Semaphore for a computer system
EP 0953903 A2 · Applicant: International Computers Ltd.
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
Read the whole patent
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 February 10, 1999 and never granted as a European patent. Had it been granted, its 20-year term would have ended February 10, 2019.
- 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 August 10, 2024.
- 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.
FiledFebruary 10, 1999
PublishedNovember 3, 1999
GrantedNever granted
Term endedFebruary 10, 2019
Application numberEP 99102487
Classification (CPC)G06F9/52
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.