Cathode-ray tube
CA 1187541 A · Owner: Koninklijke Philips Electronics N.V. · Inventors: Blanken, Jacob; Van Rijswijck, Paul J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
11, ABSTRACT:, A cathode-ray tube, for example a camera tube, or a display tube, comprising an electron gun the cathode unit of which comprises a cathode shank which is suspended coaxially in an aperture in an assembly plate extending perpendicularly to the axis of the electron gun. Such a cathode unit has a metal supporting plate which is positioned accurately with respect to the assembly plate. The assembly plate and the supporting plate extend. Glass plugs connect the assembly plate and supporting pins and supporting plate together. Starting from the assembly plate as a reference plate a very, accurate cathode unit can be obtained which can be positioned very accurately in the 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 May 21, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 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.