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Expired European patentEurope

Revolving door, in particular for protecting the access to a room

EP 0504953 B1 · Applicant: BOON EDAM BV

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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.

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Why it's free to use

  • Filed February 13, 1992 and granted December 14, 1994. A European patent lasts at most 20 years from filing, so its term ended February 13, 2012.
  • 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 13, 2017.
  • 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 13, 1992
PublishedSeptember 23, 1992
GrantedDecember 14, 1994
Term endedFebruary 13, 2012
Application numberEP 92200404
Classification (CPC)E05G5/003

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedFeb 13, 1992PublishedSep 23, 1992Patent grantedDec 14, 1994Term endedFeb 13, 2012

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.