Patents by Inventor Harold Eugene Box

Harold Eugene Box 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).

  • Recording chart
    Patent number: 4006483
    Abstract: The present invention relates to a high temperature resistant chart for use in bottom hole pressure recording devices and the like whereby scores representing recordings are inscribed on the chart. The chart is comprised of a flat dark-colored flexible sheet having a uniform layer of light-colored high temperature resistant paint composition applied to one side thereof so that scores inscribed thereon are dark-colored in a light-colored background.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: February 1, 1977
    Inventor: Harold Eugene Box