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Class Information
Number: 313/515
Name: Electric lamp and discharge devices > With character display (e.g., digits or letters) > Gaseous discharge medium > With character-shaped envelope
Description: Subject matter including an envelope in the shape of a character confining the gaseous discharge medium.

Patents under this class:

Patent Number Title Of Patent Date Issued
8319705 Plasma display device and driving method using all cell reset and on cell reset operations Nov. 27, 2012
7460094 Display apparatus Dec. 2, 2008
5744906 Gas discharge illumination device Apr. 28, 1998
5479071 Flat form device for creating illuminated patterns Dec. 26, 1995
5387837 Low-pressure discharge lamp and luminaire provided with such a lamp Feb. 7, 1995
5036243 Glass plate illumination device sign with integral electrodes of particular thermal resistance Jul. 30, 1991
4990826 Low voltage gas discharge device Feb. 5, 1991
4584501 Flat plate luminous display device Apr. 22, 1986
4471350 Display device using a discharge lamp Sep. 11, 1984

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