Multi-point addressable controls
CA 2080674 A1 · Owner: Moss, David Aaron · Inventors: Payne, David Copplestone; Moss, David Aaron
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-point addressable control system for, enviromental systems such as lighting economy systems building maintenance systems for heating ventating and, air conditioning, comprises a central controller (1) connected by a signal bus (3) to receiver units (R1...R5), each unit being serially connected to the signal bus and being provided with a programmable memory (4), operatively connected to the signal bus and a down-, link signal bus isolating switch (S1...S5) connected in, the signal bus and remotely controlled by the central controller (1); the memory of each unit can be sequentially accessed in the serial order of the units a, command from the central controller to any given receiver …
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 October 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2014.
- 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.