Color cathode ray tube having an improved one-way-only shadow mask suspension system
CA 1051501 A · Owner: Zenith Radio Corporation · Inventors: Dougherty, Lawrence W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This application depicts a rectangular color cathode ray tube having a faceplate and a mating funnel on the face-, plate of which is a system of four suspension devices one at, each corner of the mask, for detachably supporting a nonself-rigid shadow mask adjacent a screen-bearing inner surface of the faceplate. Each of the mask suspension devices comprises mask-mounted and envelope-associated components the devices, being characterized by one of the components including spring means having a provision for retentively engaging in a malefemale relationship a mating provision on the other of the components. In at least one of the suspension devices the provisions on the mask-mounted and …
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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 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 1996.
- 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.