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. 03, 1991
Filed:
Feb. 08, 1989
Willem J van den Bogert, Eindhoven, NL;
Christianus J Roozekrans, Eindhoven, NL;
Markus W Wanninkhof, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
Low-pressure mercury vapor discharge lamp having a discharge vessel filled with mercury and a rare gas, which discharge vessel comprises two substantially parallel, mainly rectangular flat glass plates located at a relatively short distance from each other and being transparent to light, which plates are connected together in a gas-tight manner proximate their circumference and form upright walls. Electrodes, between which a discharge is maintained in the discharge vessel during operation arranged on the outer side of the discharge vessel. The electrodes are in the form of strips of conducting material which are arranged on at least two facing upright walls and which extend substantially throughout the length of these walls.