Patents by Inventor John Fristrom

John Fristrom 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).

  • Remote railway crossing programmable device and methods thereof
    Patent number: 10755739
    Abstract: A railway crossing programmable device includes a communication module in signal communication with a central server for authentication of a user to use the programmable device to modify the railway system circuit. The programmable device further includes a circuit modification module configured for electrical coupling to a railway system circuit for modifying an electrical connection of the railway system circuit in a programmed manner. The programmable device further includes a user interface configured to receive user data and display output information related to at least one of a user, a device, and a circuit modification.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: August 25, 2020
    Inventor: John Fristrom