Patents by Inventor David R. Ramble

David R. Ramble 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).

  • Trolley wheels
    Patent number: 5658030
    Abstract: Trolley wheels and guide rollers for a monorail trolley system and a method for reducing debris originating from trolley wheels and guide rollers particularly in the production environment of producing iron-sensitive photographic materials.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: August 19, 1997
    Assignee: Eastman Kodak Company
    Inventors: Syamal K. Ghosh, John R. Duford, David R. Ramble, Mark S. Kohler