Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Automatic cut-out or voltage regulator in the cathode or...
Reexamination Certificate
2008-04-08
2008-04-08
Tran, Thuy Vinh (Department: 2821)
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
Automatic cut-out or voltage regulator in the cathode or...
C315S309000
Reexamination Certificate
active
11135461
ABSTRACT:
The invention relates to a novel ballast for a discharge lamp, in which a continuous-operation control circuit is brought out of operation when a physical operation, which defines a preheating time, of a preheating timer has as yet not been sufficiently returned if the lamp is intended to be restarted.
REFERENCES:
patent: 3875459 (1975-04-01), Remery et al.
patent: 5471116 (1995-11-01), Schiller
patent: 5583399 (1996-12-01), Rudolph
patent: 5801491 (1998-09-01), Canova
patent: 6008587 (1999-12-01), Mills
patent: 6448713 (2002-09-01), Farkas et al.
Bessone Carlo S.
Patent-Treuhand-Gesellschaft für Elektrische Glühlampe
Tran Thuy Vinh
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