Knife sharpening apparatus
CA 2554653 C · Owner: Stallegger, Harald · Inventors: Stallegger, Harald
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 pocket-sized knife sharpening device comprising two sharpening bars , (11, 12) which are arranged in a housing (1) and which are rotationally mounted. The sharpening , bars (11, 12) are guided with the other ends thereof into arc-shaped recesses (15, 16; 17, 18) in , the front wall (6) and the rear wall (4) of the housing (1). They are loaded onto each other by , means of springs (13 14) and cross each other in a knife opening (7) which is formed by slits (8, 9) extending in a parallel manner in relation to each other in the front wall (6) of the rear wall, (4).
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 January 13, 2005 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 13, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.