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. 14, 1976
Filed:
Jan. 31, 1975
George J Przybylek, Martinsville, NJ (US);
Burroughs Corporation, Detroit, MI (US);
Abstract
The display panel is filled with an ionizable gas and includes a base plate on which a plurality of groups of cathodes and their conductors are formed, each group of cathodes being operable to display a character. The panel also includes a face plate, spaced from the base plate, and carrying transparent conductive anodes, each associated with one group of cathodes. The base plate and face plate are hermetically sealed together by a frame of a sealing material formed from a thin layer of powdered glass in a removable carrier. The panel is made by assembling all of the parts and sealing the envelope but including a wire in the frame of sealing material. After the seal has been formed, the wire is removed to leave a small hole providing gas communication with the interior of the panel. The panel is then placed in an oven and evacuated, baked out, and filled with the desired gas filling through the hole, after which the hole is hermetically sealed. A separate mass of sealing material may also be provided to seal the hole left by the wire.