Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Reexamination Certificate
2007-07-10
2007-07-10
Patel, Vip (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
C313S110000, C313S112000
Reexamination Certificate
active
10521403
ABSTRACT:
An electric light bulb, in particular a halogen light bulb designed to be operated by mains voltage includes a substantially axially symmetrical bulb and a single-coil filament mounted in the bulb. The filament includes at least one incandescent coil section disposed outside the bulb axis. The incandescent coil is disposed axially in a transparent cylindrical sleeve which has an interference filter that reflects infra-red rays.
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patent: 3219868 (1965-11-01), Mason et al.
patent: 4017758 (1977-04-01), Almer et al.
patent: 4517491 (1985-05-01), Otto et al.
patent: 5146134 (1992-09-01), Stadler et al.
patent: 5670840 (1997-09-01), Lanese et al.
patent: 5811934 (1998-09-01), Bunk et al.
patent: 6225731 (2001-05-01), Auyang
patent: 0 446 460 (1991-09-01), None
Bunk Axel
Nittke Andreas
Frishauf Holtz Goodman & Chick P.C.
Patel Vip
Patent-Treuhand-Gesellschaft für Elektrische Gluhlampen mbH
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