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:
Sep. 20, 1977
Filed:
May. 25, 1976
Takao Kishino, Mobara, JA;
Yukihiko Utamura, Mobara, JA;
Futaba Denshi Kogyo K. K., , JA;
Abstract
A multi-digit fluorescent display tube comprising a multi-digit pattern display member including display units for respective digits disposed in parallel and composed of segment anodes, each segment anode having a phosphor layer, and at least one cathode stretched along the longitudinal direction of the pattern display member to confront the respective multi-digit pattern display units in common, wherein the cathode is disposed in an inclined manner and the perveance in each display unit is adjusted, so that when the cathode is heated and actuated by a direct current power source, the display brightness is substantially uniform in the display units for respective digits.