Patents by Inventor Neil E. Parkhurst

Neil E. Parkhurst 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).

  • Motion detection
    Patent number: 5450060
    Abstract: Apparatus for detecting motion by producing a signal in response to motion, transmitting the produced signal and receiving the transmitted signal which is converted to auditory and electrical outputs, with an ear phone jack connected to an auditory output, an on-off switch connected to the signal converter and a set of indicator lights connected to an electrical output.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: September 12, 1995
    Inventor: Neil E. Parkhurst