Multi-layer platter apparatus
CA 2396154 A1 · Owner: Chen, Hann-Kuang · Inventors: Chen, Hann-Kuang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-layer platter apparatus includes an extensible elongated rod having a plurality of hollow tapered sections which are disposed concentrically one around the other in a retracted position and which are movable relative to one another along the length of the rod, the tapered sections having recesses and projections such that the recesses of each of the tapered sections interengage the projections of an adjacent one of the tapered sections in an extended position. The apparatus further includes a plurality of platters mounted respectively on the tapered sections.
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 July 29, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 29, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 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.