Golf club head with visual indicators
CA 2185871 C · Owner: Solheim, John A. · Inventors: Solheim, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A golf club head includes a heel end, a toe end and a front face arranged for, impact with a golf ball. A plurality of elongated grooves are formed in the front face of the body. A pair of visual indicators are provided on the front face and are aligned with one of the grooves. One of the visual indicators is aligned with a heel end of the groove, and the other visual indicator is aligned with a toe end of the groove. When the club head is placed at "address" behind a golf ball the visual indicators are utilized in, a manner to position the club head so that the elongated grooves in the front face lie perpendicular to an intended target line. This prevents the club head from being …
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 September 18, 1996 and granted July 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 18, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 2018.
- 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.