Colour display tube with curved field shapers
CA 1208685 A · Owner: N.V.Philips'Gloeilampenfabrieken · Inventors: Gerritsen, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a colour display tube comprising in an evacuated envelope an electron gun system of the "in-line" type for generating three electron beams situated with their axes in one plane, in which the axis of the central beam coincides with the tube axis, which electron beams converge on a display screen provided on a wall of the envelope and in operating display tube are deflected over said display screen in two mutually perpendicular directions by means of a first and a second deflection field the direc-, tion of the third deflection field being parallel to the said plane, said electron gun system comprising at its end curved field shapers 27, 28 for causing the rasters written on the display …
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 July 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 2003.
- 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.