Improved supporting rack structure
CA 2413196 A1 · Owner: Yu, James C. W. · Inventors: Yu, James C. W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved collapsible supporting rack structure with its bearing strength reinforced, the structure is comprised of: a plurality of link sets with their links in, pairs pivotally cross-linking with each another; a plurality of connecting seats, connected each with more than one link thereby the link sets connecting with the, connecting seats form a supporting rack; the structure is characterized by that: the, structure is provided further with at least a post set; each post set includes at least, two mutually parallel posts respectively located at the two lateral sides of a link set, the post has on each of the two ends thereof a linking block; the linking block, includes a post …
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 29, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 29, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 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.