Method of and structure for removing a flexible pipeline
CA 2060478 A1 · Owner: Bravo, Sergio M. · Inventors: Bravo, Sergio M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A secondary containment system in which a flammable fluid passes from a storage tank through an underground primary pipeline past an impact valve to an inlet of a flammable fluid dispenser, the primary pipeline is within a secondary pipeline and means for supporting the impact valve within a flammable fluid containment box installed underneath the flammable fluid dispenser. The primary pipeline comprises a first pipe segment which is flexible, a second pipe segment connected at one end to the storage tank and at a second end to a first end of the first pipe segment, and means connected to a second end of the first pipe segment below the box and extending up through an aperture in the box …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 31, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 31, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.