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:
Apr. 19, 1977
Filed:
Sep. 10, 1975
Applicant:
Inventor:
Shigeki Sakata, Nagaokakyo, JA;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313402 ; 313479 ;
Abstract
An internal magnetic shield has a funnel of generally rectangular cross section and apertures disposed in all the walls of the funnel. Such shield is used in a color cathode ray tube to allow heat dissipation from a shadow mask to a funnel portion of an enclosed envelope of the tube.