An input device
CA 2248057 A1 · Owner: British Telecommunications Public Limited Company · Inventors: Jones, Mary Linda Ruth; Cliffe, Nigel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An input device for inputting instructions or data into an apparatus having a display for displaying a plurality of selectable menu items comprises a display controller for controlling the display to display at least one of the menu items as a plurality of subsequentially selectable submenu items and a selection device for, selecting one of the submenu items. The display controller is responsive to the selection of a submenu item displayed as a plurality of subsequentially selectable submenu items to control the display to indicate the selectability of the submenu items. The selector can be used for the subsequent selection of the submenu items and data or instructions are input based on a …
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 September 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 23, 2020.
- 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.