Improvements relating to emergency lighting units and installations
CA 2299526 A1 · Owner: Young, Neil Martin · Inventors: Young, Neil Martin; Bowker, Steven Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An emergency lighting unit with a receiver for receiving signals transmitted through space is disclosed. The unit has a light and a battery with charging circuitry for powering the light in the event of a mains failure. Control circuitry is provided which is capable of being switched between at least a first condition wherein the light is powered from a mains electricity supply and a second condition, wherein the light is powered by the internal battery. The lighting unit is also provided with a transmitter a memory bank and, monitoring circuitry such that when the lighting unit is caused to enter a test mode in which it is powered by the battery various, operating characteristics such as …
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 February 25, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 25, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 2022.
- 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.