Expired Canadian patentCanada
Vehicle control system
CA 2219756 C · Owner: Westinghouse Brake And Signal Holdings Limited · Inventors: Sadler, Steve; Clifton, Ray; Dunlop, Ewen
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a vehicle control system for example for use , in signalling vehicles moving within a transport system such as a railway.
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 24, 1996 and granted March 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2018.
- 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 24, 1996
GrantedMarch 11, 2003
Term endedApril 24, 2016
Patent numberCA 2219756 C
Classification (IPC)B61L27/00 +2 more
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.