Expired Canadian patentCanada
Compensation of cathode ray tube for moire
CA 1074004 A · Owner: Electrohome Limited · Inventors: Sennik, John J.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, In a video signal receiving apparatus that employs tracking focus moire is eliminated by preventing the DC voltage of the focus electrode from increasing beyond the critical level at which moire will occur. - 1 -
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 March 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 18, 1980
Term endedMarch 18, 1997
Patent numberCA 1074004 A
Classification (IPC)H04N5/14
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.