Patents by Inventor Stephen T. Marsh

Stephen T. Marsh 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).

  • Data loggers
    Patent number: 4811249
    Abstract: A data logger for logging data wherein stored incoming data is related to real time. Incoming data initially is stored at a relatively fine time resolution in a data memory. When the capacity of the data memory is exhausted, the stored data is rearranged into a relatively coarse time resolution form and then further incoming data is collected at the relatively coarse resolution. In the event of such a change of resolution, the relationship between the stored data and real time is not distorted.
    Type: Grant
    Filed: February 12, 1986
    Date of Patent: March 7, 1989
    Assignee: Delta Technical Services, Limited
    Inventor: Stephen T. Marsh