Musical notation
CA 1135085 A · Owner: Capper Styles Whole Tone Co. Limited · Inventors: Capper, Richard J.; Capper, Laurence C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A keyboard comprises a front row of keys and a rear row of keys corresponding to respective whole-tone scales a semitone apart. the rear keys are symmetrically staggered between the front keys. Musical notation for use with the keyboard comprises a stave with lines arranged in pairs, the width of the space between adjacent pairs being substantially double the width of the space between the lines of a pair. The notation includes note-heads 11 12, positioned in relation to the stave lines there being two, types of note-head distinguished by coloration corresponding, respectively to the two rows of keys 16,17.
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
- Granted November 9, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 1999.
- 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.