Patents by Inventor Ralph Schroeder

Ralph Schroeder 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).

  • Film printer
    Patent number: 5225869
    Abstract: A movie film printer having a film lift-off device for performing a splicing and cutting operation without physically altering the film negative. A film positive can be temporarily withdrawn from a drive sprocket so that the sprocket can advance the film negative to a new setting where a scene can be extracted for printing on the film positive.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: July 6, 1993
    Assignee: Hollywood Film Corp.
    Inventors: Mark Levine, Ralph Schroeder
  • Utility vehicle
    Patent number: D254431
    Type: Grant
    Filed: September 14, 1977
    Date of Patent: March 11, 1980
    Assignee: The Broyhill Manufacturing Company
    Inventors: Roy F. Broyhill, James Parsons, Ralph Schroeder, Clarence E. Stewart