Edging block and method of enclosing an area utilizing a series of edging blocks
CA 2126892 A1 · Owner: Innovative Concrete Design Corp. · Inventors: Dean, Robert W. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A landscape edging or border block has an essentially trapezoidal shape, and is capable of being used to form a linear, serpentine or combination border or edge. The blocks can also be used to enclose an area. By orienting each block such that its inner edge faces inwardly, a substantially circular shape is attained to enclose a circular area. To expand the area to be enclosed, at least two expansion blocks are added for each quadrant of the shape. The two expansion blocks are oriented so as to provide a linear segment in each quadrant between adjacent ends of each arcuate segment. Additional pairs of expansion blocks can be added for each quadrant to further expand the area to be enclosed. …
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 June 28, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 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.