Rackable collapsible stackable unit
CA 2551084 C · Owner: Harpole, Alfred Knox · Inventors: Harpole, Alfred Knox
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rackable, collapsible, and stackable unit including corner posts being foldable inwardly and downwardly, side bars connecting a pair of opposite corner posts, upper end bars connecting a pair of adjacent corner posts lower , end bars connecting the pair of adjacent upright corner posts a core holder , located on the upper end bars for retaining one end of a core a plurality of , hinges, one connected at each joint between each corner post and the side bars, and hinged support braces pivotally and diagonally connected between one of the corner posts and one of the side bars to hold the corner posts in an upright position when the unit is opened and which in combination with the , …
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 December 2, 2004 and granted July 15, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 2, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.