Interior lighting delay circuit
Patent 4071805 Issued on January 31, 1978. Estimated Expiration Date: 
January 31, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 31, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2802142 3916250 InventorAssigneeApplicationNo. 05/723764 filed on 09/16/1976US Classes:315/84, Door or closure controlled load device315/360TIME-CONTROLLEDExaminersPrimary: LaRoche, Eugene R.Attorney, Agent or FirmAbstractA vehicle lighting system includes a door lock light and switch module removably supported on a door edge and including a light emitting diode to illuminate the door lock and circuit means to energize a courtesy light in the vehicle and wherein associated circuit means including a door operated switch maintain the courtesy light illuminated once the door is unlocked and delay circuit means for maintaining the overhead light energized following door closure with transistorized cutoff means being included to terminate overhead illumination when the ignition switch of the vehicle is turned on. | |
