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European application, no grantEurope

Compression shock absorber device

EP 0054091 A1 · Applicant: WELL CONTROL, INC.

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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.

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Why it's free to use

  • Filed December 12, 1980 and never granted as a European patent. Had it been granted, its 20-year term would have ended December 12, 2000.
  • 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 June 12, 2006.
  • 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.
FiledDecember 12, 1980
PublishedJune 23, 1982
GrantedNever granted
Term endedDecember 12, 2000
Application numberEP 80304504
Classification (CPC)F16F9/303 +1 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedDec 12, 1980PublishedJune 23, 1982Term endedDec 12, 2000

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.