Patents by Inventor James C. Nepil

James C. Nepil has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Tractor trailer light system test circuit
    Patent number: 5095276
    Abstract: A tractor-trailer light system test circuit comprises: a first multi-pin plug; a plurality of circuit breakers; a second multi-pin plug; an audible buzzer; an ON-OFF push button switch; a first LED, a second LED, and a third LED; a plurality of resistors; a first resistor, a secon resistor, and a third resistor; a first test plug and a second test plug; and a first plurality of light emitting diodes, a second plurality of light emitting diodes, and a third plurality of light emitting diodes.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: March 10, 1992
    Inventor: James C. Nepil