Enhanced ring assemblies for binders and portfolios and methods for making the same
CA 2305952 A1 · Owner: Castillo, Arthur G. · Inventors: Castillo, Arthur G.; Wien, Thomas M.; Haubrich, Tyrone J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ring assembly for a binder or portfolio includes a ring portion for retaining sheet, material. The ring portion includes a plate assembly having a pair of ends a , plurality of rings, including a pair of end rings disposed at or near the ends of the plate assembly, and a pair of clips, attached to the plate assembly for securing the plate assembly to a cover of a binder or portfolio. The clips are disposed on the plate assembly longitudinally within the end rings such that one of, the end rings is disposed on the plate assembly between one of the ends and one of the clips and, the other the end ring is disposed on the plate assembly between the other the end and the other, the clip. …
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 April 19, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 19, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 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.