Safety razors
CA 2037895 C · Owner: The Gillette Company · Inventors: Brown, Frank Edward; Wilkes, David John; Taylor, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety razor in which the blade (1) has a plurality of sharp-edge apertures (2) for shaving and also a sharpened rectilinear edge (3) for trimming. Provision is made for effecting displacement of the blade relative to the razor handle (10) so that the trimming edge which is normally in an inoperative position can be moved into an operative position. The blade is held in an arched position so that the aforesaid movement is of a rocking nature.
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 10, 1990 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2012.
- 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.