Tennis grip indicator
CA 2021300 A1 · Owner: Exell, Robert E. Jr. · Inventors: Exell, Robert E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an indicator for assisting players of the game of tennis in identifying and locating the various popular ways of holding onto or gripping a tennis racket, it is known to consist of a printed strip which can be affixed to the handle of a tennis racket. In this invention, the indicia printed onto the strip enable the tennis player to visually identify and locate the various popular ways of gripping a tennis racket.
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 July 17, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2012.
- 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.