Paving block
CA 1257127 A · Owner: Mccauley Corporation Limited · Inventors: Glickman, Michael N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A paving block has six sides and a top and a bottom surface. Two of the side surfaces are substantially parallel and substantially twice as long as each of the other four side surfaces two surfaces, of the said other four side surfaces each making an angle of substantially 120° with one end of each of the longer side surfaces and each other side surface making an angle of substantially 60° with the other end of each of the longer side surfaces. In other words, a block according to the invention as seen in plan is of "chevron" shape a shape that could also be termed a squat "V" shape. This is a simple easily manufactured block, which permits numerous different arrangements to be laid.
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
- Granted July 11, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 11, 2006.
- 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.