Chord progression finder
CA 2035000 C · Owner: Bezeau, Scott J. · Inventors: Bezeau, Robert A. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chord progression finder for determining each and every tone of a selected musical scale in a selected key note and each and every tone of its relative musical scales, as well as the various chords playable for the selectedmusical scale and its relative scales while simultaneously providing, information on which keys or frets of a musical instrument are to be played for producing the indicated tones. A base has printed information pertaining to a particular musical instrument and also fingering patterns for playing toneson that instrument arranged in a predetermined sequence indicative of any number of desired musical scales. A slidable transparent first overlay is, slidably connected …
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 January 25, 1991 and granted June 1, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2013.
- 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.