Mold device for forming concrete pathways
CA 2081763 C · Owner: Hupp, Jack T. · Inventors: Hupp, Jack T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a apparatus for forming concrete pathways. The apparatus comprises a mold incorporating a plurality of openings for receiving concrete therein. The mold openings define separate and distinct concrete cavities. Concrete pathways are formed by placing the mold of the invention on a surface for receiving the concrete in the concrete cavities. Upon removal of the mold, the concrete segments retain the shape of the mold cavities and are slightly separated from each other. The procedure is repeated to form a pathway of a desired length and configuration.
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 October 29, 1992 and granted February 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2014.
- 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.