Electronic keyboard for one-hand operation
CA 1297967 C · Owner: Guyot-Sionnest, Laurent · Inventors: Guyot-Sionnest, Laurent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Laurent GUYOT-SIONNEST, Electronic keyboard for one-hand operation Priority: France No. 85 11 532 of 29 July 1985 in the Applicant's name, The electronic keyboard for one-hand operation more particularly for generating alphanumeric and analog characters and/or processing instructions comprises a plurality of keys (2, 4) and an electronic circuit connected electrically to said keys in order to interpret the state of the keys (2, 4) and deliver a signal indicative thereof, said electronic circuit also being connected to display means (6) and to external connection means. It comprises at least two keys (2) associated with the fingers of a hand other than the thumb and a key (4) associated with …
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 March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- 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.