Patent Yard Sign in
Expired European patentEurope

Obstacle surmounting aid for tracked vehicle

EP 0247079 B1 · Applicant: Secretary of State for Defence in Her Britannic Majesty's Gov. of the United Kingdom of Great Britain and Northern Ireland

EPO PDF

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 October 27, 1986 and granted November 2, 1989. A European patent lasts at most 20 years from filing, so its term ended October 27, 2006.
  • 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 27, 2012.
  • 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 27, 1986
PublishedDecember 2, 1987
GrantedNovember 2, 1989
Term endedOctober 27, 2006
Application numberEP 86906395
Classification (CPC)B62D11/20 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedOct 27, 1986PublishedDec 2, 1987Patent grantedNov 2, 1989Term endedOct 27, 2006

Sources & verification