Wheelchair back for kyphotic patients
CA 2104271 C · Owner: White, Carol E. · Inventors: White, Carol E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is proved a wheelchair back support adapted to specifically meet the requirements of a kyphotic patient. The support comprises an outer shell formed of a firm pliable fabric. An inner foam padding is inserted within the outer shell. Two longitudinally extending, resilient spaced-apart ribs are positioned at predetermined distances within the outer shell. The back is top stitched along its outer perimeter at a predetermined distance from the edge thereof to thereby achieve the specified shape.
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 August 17, 1993 and granted January 28, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2015.
- 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.