Electron gun system
CA 1281360 C · Owner: Schanz, Werner · Inventors: Schanz, Werner; Lau, Bernhard; Kornaker, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The electron gun system of a color picture tube has coined depressions in the area of the apertures for the electron beams in at least one grid electrode the coined, depressions in one side of the grid electrode being concave. Preferably this is the side of the grid electrode facing the cathode.
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 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2008.
- 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.