Method of constructing multi-layer type putting green
CA 1291180 C · Owner: Shibata, Masashi · Inventors: Shibata, Masashi; Shibata, Shigeki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the present invention a soil bed of a, putting green of a golf course has a multi-layer construction. A net is interposed between the layers so that the layers constructing the soil bed do not mix with each other. As a result, superior draining of the putting green is obtained over a long period of time.
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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.