Canadian application, no grantCanada
Secondary visual warning system
CA 2121287 A1 · Owner: Arts, James A. · Inventors: Arts, James A.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device that activates the 6rake lamps on motor vehicles when the vehicle's engine is used to slow down the vehicle. The engine's back pressure is used to slow down the vehicle.
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 April 14, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 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.
FiledApril 14, 1994
GrantedNo grant recorded
Term endedApril 14, 2014
Patent numberCA 2121287 A1
Classification (IPC)B60Q1/44
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.