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:
Aug. 21, 1990
Filed:
Feb. 21, 1989
Applicant:
Inventor:
Ronald Van der Wilk, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313411 ; 313422 ; 313495 ; 313269 ;
Abstract
A display device having in an evacuated envelope a mechanically tensed thermionic linear wire cathode 4 and a bent first electrode 5 having a slit 6. The wire cathode 4 is rendered insensitive to microphonics by means of positioning means 22 which are urged against the slit 6 by the wire cathode 4.