Apparatus for relieving the symptoms of deep vein thrombosis
CA 2433771 A1 · Owner: Environmental Seals Ltd. · Inventors: Ward, Derek Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for relieving the symptoms of deep vein thrombosis comprises a fabric envelope having on one surface a plurality of projections and on an opposed surface, one or more strips of Velcro (RTM) or similar material for releasably attaching the envelope to a carpeted floor surface. A container fits within the fabric envelope and comprises two side-by-side compartments which communicate with one another through one or more openings. A mouthpiece is provided in the container to enable the compartment to be inflated. The container includes a pocket above one of the two compartments of the container to receive a heating element.
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 July 2, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 2, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2024.
- 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.