Color picture tube having improved shadow mask-frame assembly
CA 1292500 C · Owner: Ragland, Frank Rowland Jr. · Inventors: Ragland, Frank Rowland Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A b s t r a c t, A rectangular color picture tube of the shadow mask type includes an improved mask-frame assembly and support means therefor. The frame has two substantially perpendicular flanges, a first flange and a second flange. The first flange extends from the second flange away from the screen of the tube. The second flange extends from the first flange toward the shadow mask. The second flange includes peripherally spaced tabs extending therefrom. The shadow mask is telescoped into the frame and is attached to the tabs. In a preferred embodiment, the corners of the frame are truncated. Springs are interconnected to each truncated corner of the frame to support the mask-frame …
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 November 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2008.
- 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.