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Class Information
Number: 313/522
Name: Electric lamp and discharge devices > With character display (e.g., digits or letters) > Incandescent filament display
Description: Subject matter including a filament in the shape of a character.

Patents under this class:

Patent Number Title Of Patent Date Issued
6734618 Vacuum fluorescent display with rib grid May. 11, 2004
5955839 Incandescent microcavity lightsource having filament spaced from reflector at node of wave emitted Sep. 21, 1999
5844364 Incandescent light-emitting assemblies Dec. 1, 1998
5644676 Thermal radiant source with filament encapsulated in protective film Jul. 1, 1997
5500569 Electrically modulatable thermal radiant source and method for manufacturing the same Mar. 19, 1996
4724356 Infrared display device Feb. 9, 1988
4563617 Flat panel television/display Jan. 7, 1986
4243910 Filament support assembly for display device Jan. 6, 1981
4039891 Incandescent display lamp Aug. 2, 1977
3941926 Variable intensity display device Mar. 2, 1976

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