Demountable lampshade
CA 2451748 A1 · Owner: Chen, Teng Li · Inventors: Chen, Teng Li
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A demountable lampshade includes a plurality of shade piece a connecting base, and a plurality of mounting fixtures. Each shade piece has a frame body with a receiving portion formed thereon. The connecting base has a plurality of projecting, bars. Each projecting bar has a connecting portion at the end to connect with the, receiving portion of each shade piece. The mounting fixtures are used to mount the, shade pieces with each other to form a lampshade structure. Accordingly the, lampshade structure can be rapidly and easily disassembled for conveniently storing or, transporting.
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, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 2, 2025.
- 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.