Collapsible chair with solid arm rest and tensioned seat
CA 2469767 A1 · Owner: Tofasco · Inventors: Zheng, Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A collapsible chair (100) having front (110) and rear (120) legs,seat (140) and back (140) support rods, first (160) and second (162) pairs of cross braces, and solid arm rests (150), all of which are coupled such that the chair collapses in a single movement in which the front legs approximate each other when the seat support rods pivots towards the back support rods. The seat is preferably a tensioned seat (190) and continuous with the backrest (180).
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 November 20, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2024.
- 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.