Swing teaching aid
CA 2269006 A1 · Owner: Murdoch, Greg · Inventors: Murdoch, Greg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A swing teaching aid is disclosed comprising a pendulum attached to a head attachment apparatus which can be worn on the head of an athlete. A pendulum guide defines an optimum range of movement of the pendulum in relation to the head attachment apparatus. The whole apparatus may be conveniently stored in the hollow weight of the pendulum. The apparatus allows for the training of an athlete in the weight transfer necessary for a proper swing in baseball golf, tennis and so, forth.
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 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2021.
- 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.