Railway tie plate
CA 2417481 C · Owner: Msr Rail Products Inc. · Inventors: Faichney, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tie plate for securing a rail to a railway tie. The tie plate admits to an initial spike securement followed by a subsequent screw securement. Spring clips are provided for holding a rail against a rail support section of the tie plate. Holes for admitting the spikes may be positioned to have a portion of the spike heads overlap an edge of the rail to further secure the rail against the tie plate.
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 January 27, 2003 and granted October 18, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 2025.
- 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.