Sharpenable edge sharpening equipment
CA 2331369 A1 · Owner: Pretorius, Heinrich Stieger · Inventors: Pretorius, Stephan Deon; Pretorius, Heinrich Stieger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sharpening equipment in the form of sharpening device (10) comprises jaw fashion arranged gripping means (12) for gripping an item such as a knife (50) of which the blade requires sharpening a sharpening means carrier in the form of a sharpening element holding base (14) releasably holding a sharpening stone (16), a guiding layout in the form of a guiding rod (18) mounted to reciprocate along an adjustably mounted support guide (20) in parallel with the sharpening surface (16.1) and an angle adjustment facility as provided by a connecting arm (24). The arm (24) extends integrally with respect to the gripping means (12) and is swivellably connected to the leading end of the rod …
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 May 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2021.
- 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.