Reservoir type water heating device
CA 1102638 A · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Nishi, Atsuyoshi; Kuwazawa, Hiroyasu; Oshima, Kaneyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vertical drum is disposed upon and connected to a combustion chamber through a heat transfer wall. A burner opens in the combustion chamber to face the heat transfer wall and an exhaust tube is connected to the combustion chamber on the lower wall adjacent its periphery and extends horizontally below the drum until it communicates with the atmospher. - 18 -
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
- Granted June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
- 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.