Golf swing practice device
CA 2333627 A1 · Owner: Gsp Co. Inc. · Inventors: Apthorp, Mark S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A golf swing practice (1) device comprises a carrier member (2) which is removably attached to the shaft (41) of a golf club (40) and which is preferably attached to a lower portion of the hand grip (42) on the golf club (40). Two spaced apart light sources (3 4) are mounted on the carrier (2) so , as to emit two discrete and parallel beams of light which extend in a direction towards the head of the club (40) and which lie in a plane which bisects a face of the club head and which is also substantially perpendicular to the club face. In an additional embodiment the carrier member (2) can also , be attached to a hole (15) in the hand grip (42) located at the proximal end of the golf …
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 December 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2020.
- 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.