Golf club head
CA 2121150 C · Owner: Progroup Inc. · Inventors: Long, Clay
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A golf club having weight members located at the toe and the hosel of a cavity back club head. The toe weight and hosel weight each have a center of mass which is located above a horizontal line drawn through the center of gravity of the club head when the club head is lying at address. In one preferred embodiment the toe weight extends rearwardly from the toe rim of the club head and rearward of a plane containing the rear edges of the club head to increase the back weighting and therefore the dynamic loft of the club head. The hosel weight extends outwardly from the hosel and is located anywhere within a 90° segment of the outer periphery of the hosel. At one extreme position, the hosel …
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 April 13, 1994 and granted February 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 2016.
- 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.