Multple jet shower with aeration device
CA 2292756 C · Owner: Knapp, Alfons · Inventors: Knapp, Alfons
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aerating device (15) for a shower (10) where the shower includes a water chamber (11) having a connection (12) for the supply of pressurized water and having a first perforated plate (13) that forms a wall of the water chamber and that is provided with a plurality of holes (14). Each hole of the first plate is constructed as to project a single jet of water. The aerating device comprises a second perforated plate (16) positioned downstream from the first , plate to make an air chamber (20) between the two plates. The second plate has a plurality of holes (17), each of which is aligned along the direction of projection of the respective jet of water of a corresponding hole (14) of …
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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 20, 1998 and granted December 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 20, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 2020.
- 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.