Bladeset for hair clippers including blade with hair evacuation configuration
CA 2313432 C · Owner: Wahl, Gregory S. · Inventors: Wahl, Gregory S.; Elston, Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blade is provided for use in a hair clipper having a bladeset including a moving blade and a stationary blade, the bladeset being constructed and arranged, so that the moving blade is pressed against the stationary blade for allowing the, moving blade to reciprocate relative to the stationary blade in a transverse direction, to a longitudinal axis of the clipper. The blade includes a base portion having a tooth end, a plurality of teeth arranged in spaced parallel relationship to each other , and projecting from the tooth end, each tooth having a tip and a root opposite the tip and being joined to the tooth, end. Also, the teeth have a constant rake angle at least in the cutting area …
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 31, 1997 and granted December 4, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 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.