Golf green cover
CA 2312299 A1 · Owner: Degarie, Claude J. · Inventors: Degarie, Claude J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The golf green cover is made of three layers; a water-impermeable top layer and intermediate and bottom layers made of semi-rigid insulating foam. The bottom layer has perforations therein. Transversal air passages are formed between the intermediate and the bottom layers and communicate with the perforations. Each transversal air passage has a cord segment and an arc segment whereby it is non-collapsible under snow loads. Longitudinal air passages are formed under the seams between adjacent cover panels and communicate with the transversal air passages. A gas collection pipe is mounted in one of the longitudinal air passages and communicates with an air valve and a rotary ventilator. The …
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 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2022.
- 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.