A novel life-saving device
CA 2419140 C · Owner: Dority, John B. · Inventors: Dority, John B.; Driscol, Paul K.; Wahl, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel life-saving device (Fig. 1D) comprising a buoyant disk having a top side, a bottom side, a leading edge and a cavity on the bottom side along and adjacent to the leading edge, the cavity having an inner side generally parallel to the leading edge the inner side having an upper edge and a lower edge and a length of line affixed through and about the center of the bouyant disk generally paralell to the leading edge and disposed around the inner side of the cavity.
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 September 20, 2001 and granted July 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 20, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 20, 2023.
- 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.