Portable oxygen dispenser
CA 2347322 A1 · Owner: Welik, Ralph · Inventors: Welik, Ralph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable oxygen dispenser for providing an emergency supply of oxygen-rich gas, includes a closed cannister having a top closure portion and a cylindrical side wall defining a, cannister axis and diameter and containing a quantity of pressurized oxygen-, rich. A dispensing, orifice includes an externally actuable valve at one axial end of said cannister for maintaining, said the orifice normally closed. The valve includes a nozzle stem generally arranged along the, cannister axis for opening the orifice when an axial force is applied. An annular neck wall is, generally concentrically arranged about the nozzle stem and dimensioned to form an annular, space between the nozzle stem and …
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 10, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 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.