Programmable control apparatus for a heating installation
CA 2135341 C · Owner: Societe Delta-Dore S.A. · Inventors: Raffray, Patrick; Roger, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention concerns a programmable control apparatus for a heating installation of the type that consists of a clock and a processing unit provided to control one or more heating appliances of the said installation according to programming data. The said programming data are either programming data read in the memory of a card, of the type known as smart cards when, such a card is introduced into a reader of the said apparatus, or programming data resident in the said processing unit when no card is introduced into the said reader. The said resident programming data can be modified only if a card, known as a key card is, introduced into the reader.
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 November 8, 1994 and granted February 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 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.