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:
Jul. 12, 1977
Filed:
Feb. 11, 1976
Applicant:
Inventor:
Lee T Todd, Jr, Lexington, KY (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
F21V / ; G03C / ; H01J / ;
U.S. Cl.
CPC ...
427 73 ; 427 64 ; 427 71 ; 427106 ; 427181 ; 427230 ; 427377 ; 427380 ; 2523 / ; 2523 / ; 2523015 ; 313465 ; 3501 / ;
Abstract
A cathode ray tube (CRT) having a faceplate-deposited cathodochromic material, said CRT having electron beam write and erase. The erase beam is an electron beam focused to a size of approximately 0.010 inches at the image screen of the CRT and the intensity of the beam is about 10.sup.5 watts/in.sup.2.