Colour display tube
CA 1181465 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: De Winkel, Bert; Groot, Theodorus C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A colour display tube comprising a glass envelope having a substantially rectangular display window with an upright edge. in the corners the edge comprises chamber-like recesses and a metal plate is connected in each of these recesses by means of a cement. The metal plates serve as supporting means for the suspension of a colour selection electrode in the display tube.
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 January 22, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2002.
- 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.