Discharge device with electrodes spaced by grains of insulating material
CA 1071686 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Ronde, Hubertus J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PHN 8272, ABSTRACT:, In a colour television display tube of the postdeflection-focus type, the colour selection electrode comprises a first and a second system of lens electrodes. The lens electrodes of the first system are kept at the defined distance from the lens electrodes of the second system by grains of an electrically insulating material present between the facing surfaces of the lens electrodes. The grains are sunk on two sides in layers of an adhesive material present on the facing surfaces of the lens electrodes, the sum of the thicknesses of the adhesive layers being smaller than the distance between the lens electrodes.
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 February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
- 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.