Water heater with integral mixing valve
CA 2116739 C · Owner: Hughes, Dennis R. · Inventors: Hughes, Dennis R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water heater comprising a tank adapted to hold water, a water outlet communicating with the tank a water, inlet communicating with the tank and communicable with the outlet independently of the tank, and a temperature responsive valve in the tank for permitting unrestricted communication of heated water in the tank with the water outlet when the water temperature in the tank is below a predetermined value and for, restricting communication of heated water in the tank with the water outlet when the water temperature in the tank is above the predetermined value.
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 March 1, 1994 and granted January 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 1, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2016.
- 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.