Playground equipment
CA 2296613 A1 · Owner: Merrill, John E. · Inventors: Merrill, John E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A play and climbing equipment structure including a support structure with at least three sloping beams that form a vertex where the three beams meet, and that form a polyhedral shape having a triangular shaped bottom. At least one flexible planar surface is positioned within the interior of the support structure and is attached to the sloping beams. A contoured object is place immediately under the vertex, and restricts the excessive inward movement of the beams, thereby preventing unintended collapse of the structure.
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 18, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2022.
- 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.