Wheelbarrow insert
CA 2129309 C · Owner: Keough, John G. · Inventors: Keough, John G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wheelbarrow enlargement insert comprising front back and, two side panels for mating insertion into a bucket of the wheelbarrow whereby volumetric capacity of the wheelbarrow is increased. The insert is made of semi-rigid creaseable sheet material, such as corrugated cardboard or plastic. Either each of the front and back panels, or each of the two side panels includes a crease between side edges of each panel adapted cooperatively to enable selective opening of the insert for the mating insertion and folding of the insert to a substantially flat storage form.
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 August 2, 1994 and granted April 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 2, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 2, 2016.
- 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.