Barrier-free drainage apparatus
CA 2068684 A1 · Owner: Zaccai, Gianfranco · Inventors: Misage, Thomas J.; Dearborn, Timothy C.; Zaccai, Gianfranco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A barrier-free drainage apparatus includes a trough positioned adjacent the front edge of a platform. The trough has a bottom wall which is positioned below the front edge of the platform and at least one outlet opening in, fluid flow communication with a drain pipe. A grate is positioned inside the trough and has an upper, generally horizontal portion with a plurality of apertures therethrough. The upper portion is supported such that said upper portion is spaced apart from the trough bottom wall in a generally horizontal position and a top surface of the upper portion is substantially the same height as the front edge of the platform. Another aspect of the invention is the configuration …
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 May 14, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 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.