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. 26, 1981
Filed:
Sep. 28, 1978
Futaba Denshi Kogyo K.K., Mobara, JP;
Abstract
A fluorescent display device having at least a filamentary cathode for emitting electrons, pattern display sections each coated with fluorescent material, a plurality of control electrodes electrically independent of one another provided opposite to the pattern display sections respectively, the anodes and control electrodes being selectively given drive signals thereby to make the electrons emitted from the filamentary cathode impinge on the anodes so as to display characters, numerals, graphic forms and the like on the pattern display sections, and a plurality of auxiliary electrodes provided at or above and in the vicinity of gaps between the control electrodes respectively and at all times kept at a positive potential with respect to the filamentary cathode so that the mutual influence of the control electrodes may be intercepted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile