Expired European patentEurope
Swimming pool
EP 0004144 B1 · Applicant: BLAKEWAY MARVIROLL POOLS PTY. 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 21, 1979 and granted November 11, 1981. A European patent lasts at most 20 years from filing, so its term ended February 21, 1999.
- 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 21, 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.
FiledFebruary 21, 1979
PublishedSeptember 19, 1979
GrantedNovember 11, 1981
Term endedFebruary 21, 1999
Application numberEP 79300265
Classification (CPC)E04H4/0037 +1 more
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.