Patents by Inventor Marshall B. McDonald

Marshall B. McDonald 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).

  • Laser striping method for assembling TWT
    Patent number: 4936008
    Abstract: An improved method for assembling a travelling wave tube (TWT) including the step of forming a heat stripe along the barrel of the TWT to reduce the diameter of the barrel and create an interference fit between the barrel and internal components of the TWT.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: June 26, 1990
    Assignee: Teledyne Mec
    Inventors: Joseph A. Teresi, Marshall B. McDonald