Portable sharpener
CA 2092791 A1 · Owner: Salvail, Roger · Inventors: Salvail, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a portable sharpener for blade of the type comprising a main portion provided with one or several cutting edges and one or two end portions each provided with one or several cutting edges said main portion, having parallel lateral faces and one or several cutting edges substantially straight or slightly curved and when more than one cutting edge is provided, said cutting edges being substantially parallel between them, each of end portions extending one corresponding end of the main portion and each having lateral faces parallel and coplanar with those of the main portion and having one or several cutting edges substantially curved, said sharpener comprising a body …
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 March 26, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2015.
- 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.