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CA 2222916 A1 · Owner: Crate, Barry T. · Inventors: Crate, Barry T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A discharge system for connection to a downpipe of a building has an outlet channel for water to be discharged at a distance from the building. The outlet pipe is hinged between a storage position snug against a downpipe or a vertical side of the building and a discharge position in which it extends outwardly from the building. The discharge pipe moves between its storage and discharge positions automatically. It is spring biassed into its storage position but when water flows in the downpipe a reservoir of the system fills and spring bias is overcome to lower the discharge pipe into its discharge position.
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 February 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2020.
- 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.