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:
Nov. 21, 1989
Filed:
Dec. 24, 1987
Applicant:
Inventors:
Tatsushiro Hirata, Tokyo, JP;
Tomohisa Uba, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313407 ; 313402 ;
Abstract
A cathode ray tube having an internal magnetic shield formed of an inner magnetic plate and an outer magnetic plate which intersect at an acute angle, the distance from the upper terminal end of the inner magnetic plate to the inner surface of the panel, and the distance from the upper end of the outer magnetic plate to the inner surface of the panel being adjusted so as to satisfy a predetermined relationship, thus improving the magnetic shield effect.