Variable colour complementary display device
CA 1259143 A · Owner: Texas Digital Systems, Inc. · Inventors: Havel, Karel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A display device includes a plurality of variable colour display areas arranged in a pattern for selectively exhibiting a plurality of display units. The group of display areas corresponding to the display unit is illuminated in a selected colour, and the remaining display areas are illuminated in a colour substantially complementary.
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 September 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 5, 2006.
- 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.