Interlocking honeycomb-cored panel system for construction of load supporting surfaces
CA 2472841 C · Owner: Ballard, Edwin L. · Inventors: Ballard, Edwin L.; Warren, Anthony G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reusable panel system for the construction of load bearing surfaces such as temporary or semi-permanent roadways and equipment support and work surfaces laid out over geologically unstable surfaces or over wet-land marshes. The individual panels of the present invention may interlock on one or more sides to form stable and continuous load bearing surfaces.
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 July 2, 2004 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 2, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2026.
- 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.