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:
Aug. 15, 1989
Filed:
Dec. 24, 1987
Applicant:
Inventors:
Yasunobu Amano, Tokyo, JP;
Masayuki Sudo, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313428 ; 313431 ; 313433 ; 313437 ; 313439 ;
Abstract
A cathode-ray tube which has an electron gun and a correcting unit with a magnetic device electrically coupled to a final electrode of the electron gun so as to selectively apply a uniform magnetic field to required ones of a plurality of electron beams, so as to thereby correct the path of a selected electron beam without causing distortion in the shape of the beam spot.