Patents by Inventor Steven F. Marshall

Steven F. Marshall 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).

  • Self-inking article marking device
    Patent number: 4838158
    Abstract: An apparatus for marking an article has a frame within which a printing carriage is rotatably mounted. The carriage has two fulcrum assemblies which slide in channels on the frame. A drive mechanism moves the carriage from a marking position to a position where ink is applied to selected printing characters on the carriage. The carriage is moved to a third position where the fulcrum assemblies are released from the channels to rotate the carriage to facilitate changing the printing characters.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: June 13, 1989
    Assignee: United Health, Inc.
    Inventors: Steven F. Marshall, Richard E. Haden, Jr., Darrell R. Johnson