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:
Mar. 08, 1983
Filed:
Jan. 18, 1982
Applicant:
Inventor:
Norman J Frame, Whitefish Bay, WI (US);
Assignee:
W. H. Brady Co., Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09F / ;
U.S. Cl.
CPC ...
428195 ; 40544 ; 428469 ; 428690 ; 428698 ; 428917 ;
Abstract
An electroluminescent display device is provided in which electroluminescent portions are defined by first laying down a layer of electroluminescent host material and thereafter doping this layer in selected portions with an electroluminescent activator.