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. 05, 1987
Filed:
May. 20, 1985
Applicant:
Inventors:
Manfred Kobale, Faistenhaar, DE;
Peter Mammach, Unterhaching, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313551 ; 313 15 ;
Abstract
An apparatus for maintaining constant pressure in gas discharge vessels, particularly for flat plasma picture screens with electron post-acceleration. The gas pressure is kept constant in the gas discharge vessel. For this purpose, a glass container preferably filled with helium is applied in the gas discharge vessel, this glass container being provided with a heater for temperature control and thus provides variable gas permeability. An apparatus of the invention is particularly employed for flat plasma picture screens.