Patents by Inventor Robert J. Langren

Robert J. Langren 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).

  • Patient transfer device
    Patent number: 4297753
    Abstract: A patient transfer device having a frame which supports a number of parallel rollers over which an endless belt is fitted for travel across the rollers. The frame is rendered intermediately foldable for compactness of storage or carrying and particularly to facilitate initial installation and subsequent changing of belts for asepsis and/or wear replacement.
    Type: Grant
    Filed: September 7, 1979
    Date of Patent: November 3, 1981
    Assignee: Warner-Lambert Company
    Inventor: Robert J. Langren