Patents by Inventor Virgil M. Stafford

Virgil M. Stafford 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).

  • School bus stop sign
    Patent number: 4138668
    Abstract: An electrically-powered school bus stop sign apparatus mounts either partially recessed within the exterior panel of the body of the school bus adjacent the driver or, alternatively, on the exterior panel. A DC motor and associated arm/linkage mechanical means is used to deploy and retract the stop sign blade with the controls being operated by the driver from within the bus.
    Type: Grant
    Filed: October 12, 1977
    Date of Patent: February 6, 1979
    Assignee: said Joseph E. Latta, Jr.
    Inventors: Joseph E. Latta, Jr., Virgil M. Stafford