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European application, no grantEurope

Device for displaying an image in front of an optically contrasting background

EP 0019229 A1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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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.

Google PatentsEPO PDF

Why it's free to use

  • Filed October 30, 1978 and never granted as a European patent. Had it been granted, its 20-year term would have ended October 30, 1998.
  • 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 30, 2004.
  • 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 30, 1978
PublishedNovember 26, 1980
GrantedNever granted
Term endedOctober 30, 1998
Application numberEP 80102542
Classification (CPC)F21K2/00 +2 more

Timeline

Timeline From EPO dates

1979198119831985198719891991199319951997Application filedOct 30, 1978PublishedNov 26, 1980Term endedOct 30, 1998

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.