Footwear having a sole with adherent material release grooves and flexibility enhancing recesses
CA 2202107 C · Owner: Bell, Jonathan · Inventors: Bell, Michael; Bell, Jonathan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ice-gripping sandal for releasable mounting on the foot of a person or on the sole of a boot or other primary footwear worn by the person. The sandal comprises a sole a toe, strapping assembly and a heel strapping assembly for mounting the sandal on the boot. The sandal's sole has a bottom surface having plural groups of cleats projecting therefrom. Some of the cleats are located within a forefoot and toe portion of the sole and extend at an acute angle to the longitudinal axis of the sole. These cleats include end portions having respective ice-gripping screws mounted therein. Grooves are provided between the cleats in the forefoot and toe portions of the sole with the width and depth …
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 8, 1997 and granted July 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 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.