Methods and apparatus for cleaning hair clipper blades
CA 2065488 C · Owner: Wahl, Gregory S. · Inventors: Wahl, John F.; Wahl, Gregory S.; Walton, William M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tool for cleaning between hair clipper blades includes an elongated handle with a comb at one end of the handle. The comb has a plurality of spaced teeth separated by openings and a finger, at one end of the comb. In use the finger is inserted between the, clipper blades separating them so that the comb can be passed through the space between the blades, removing unwanted matter such as uncut hair strands.
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 7, 1992 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 2014.
- 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.