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:
Jan. 27, 1981
Filed:
Sep. 28, 1978
Applicant:
Inventors:
Ulrich Hirsch, Paderborn, DE;
Walter Hardt, Paderborn, DE;
Assignee:
Nixdorf Computer AG, Paderborn, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ; G02B / ;
U.S. Cl.
CPC ...
358248 ; 358253 ; 350318 ;
Abstract
A color filter is placed between the face of a cathode ray tube display unit and a matt black gauze to produce an amber-colored image background. This highlights yellow data characters. The filter is a curved acrylic glass pane either bonded to the tube face in spaced relation or secured thereto by means of a sealing gasket of unique design and construction.