Patents by Inventor Russel B. Mahaffey

Russel B. Mahaffey 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).

  • Dual in focus gobo
    Patent number: 8573810
    Abstract: A gobo holder with two gobos that are rotatable one relative to the other. The gobos are located with their patterned surfaces facing one another and very close to one another so that both can be in focus at the same time.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: November 5, 2013
    Assignee: Production Resource Group, LLC
    Inventors: Russel B Mahaffey, Breck M. Outland, David A. Friedersdorff
  • Dual in Focus Gobo
    Publication number: 20110170072
    Abstract: A gobo holder with two gobos that are rotatable one relative to the other. The gobos are located with their patterned surfaces facing one another and very close to one another so that both can be in focus at the same time.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 14, 2011
    Applicant: PRODUCTION RESOURCE GROUP L.L.C
    Inventors: Russel B. Mahaffey, Breck M. Outland, David A. Friedersdorff