Dual filament fluorescent lamp for avoinics liquid crystal displ

Details Dual filament fluorescent lamp for avoinics liquid crystal displ Dual filament fluorescent lamp for avoinics liquid crystal displ

1995-03-08

1996-05-14

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313492, 313574, 340642, H01J 61067

Patent

active

055170790

ABSTRACT:
A dual filament fluorescent lamp where the individual filaments are disposed along diameter lines of a fluorescent tube and are disposed on differing planes at differing heights within the tube with a predetermined separation between the tube filaments and the filaments being disposed in a perpendicular fashion when viewed from above. The primary filament is disposed above the secondary filament and it has a larger diameter that the secondary filament.

REFERENCES:
patent: 2814748 (1957-11-01), Cox
patent: 3215881 (1965-11-01), Waymouth
patent: 3328622 (1967-06-01), Toomey
patent: 3356883 (1967-12-01), Menelly et al.
patent: 3898503 (1975-08-01), Shurgan
patent: 4734616 (1988-03-01), Northrop
patent: 4866339 (1989-09-01), Budinger et al.
patent: 5296783 (1994-03-01), Fischer

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