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:
Dec. 06, 1983
Filed:
Dec. 30, 1980
Applicant:
Inventor:
David Branston, Erlangen, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313485 ; 313582 ; 313643 ;
Abstract
In a gas discharge display device with a gas discharge space which is separated by a hole matrix from an electron acceleration space, helium, to which an amount of 0.1 to 10% of at least one of the gases argon, crypton, xenon, nitrogen or carbon dioxide is admixed, is used as the filling gas with an overall pressure of 0.5 to 5 mbar to obtain an enhanced contrast effect on the picture screen.