Cathode ray tube with getter holder
CA 1190958 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Van Daelen, Henri J.G.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
9, In a cathode ray tube, in particular a television camera tube, a getter is assembled so as to be thermally independent of the electron gun and may be provided with any desired electric potential. The getter is positioned in a tubular envelope portion of the tube by means of a supportion member which bears on a supporting edge in the envelope. The supporting edge is formed by a substantially stepwise reduction of the internal transverse dimension of the envelope portion. The supporting member comprises an inner ring which is connected to an outer ring in a restricted number of places. In the circumferential direction the inner ring and the outer ring show an interruption so as to …
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 23, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 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.