Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2005-06-21
2005-06-21
Dinh, Trinh Vo (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S129000, C315S362000
Reexamination Certificate
active
06909248
ABSTRACT:
A lamp system includes a light source and an elapsed time indicator system which is coupled to the light source. The elapsed time indicator system accumulates a count of elapsed time of operation of the lamp system. The count provides an indication of a life span of the lamp system.
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Dinh Trinh Vo
Heraeus Holding GmbH
Nixon & Peabody LLP
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