The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 1990
Filed:
May. 20, 1987
Applicant:
Inventors:
Karl Kniesser, Aichwald, DE;
Walter Kornaker, Ulm/Donau, DE;
Bernhard Lau, Elchingen, DE;
Werner Schanz, Esslingen-Zell, DE;
Assignee:
Nokia Graetz, Pforzheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313414 ; 313448 ;
Abstract
The electron gun system of a color picture tube has coined depressions in the area of the apertures for the electron beams in at least one grid electrode, the coined depressions in one side of the grid electrode being concave. Preferably, this is the side of the grid electrode facing the cathode.
Kniesser, Karl. (1990). Electron gun system (U.S. Patent No. 4891549). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4891549
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile