Cutter blade for hair clippers
CA 2210358 C · Owner: Wahl Clipper Corporation · Inventors: Altamore, Nicolo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A clipper for cutting hair strands includes a blade set which has a stationary blade having a plurality of stationary blade teeth arranged in a row so that hair strands enter between adjacent stationary teeth as the blade set moves through the hair strands. The stationary blade teeth having angled side cutting edges and tips and the side cutting edges of adjacent teeth form roots where they intersect. A moving blade has a plurality of blade teeth which are also arranged in a row. The blade teeth of the moving blade complement the stationary blade teeth and pass across the stationary blade teeth in use to cut some of the hair strands. The blade teeth of the moving blade are relatively short …
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 July 15, 1997 and granted October 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2019.
- 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.