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:
May. 25, 1976
Filed:
Jul. 19, 1974
Applicant:
Inventor:
Lee T Todd, Jr, Lexington, KY (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
178-788 ; 178-785 ; 178D / ; 3501 / ; 313465 ;
Abstract
A cathode-ray tube projection system employing a cathodochromic image screen and electron beam erase and in which the image is projected from the image screen surface nearest the electron gun. The main advantages of this system are higher resolution and improved image erasure which provides a high-contrast image.