Patents by Inventor John C. Fredenburg

John C. Fredenburg 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).

  • Cotton gin suction pipe
    Patent number: 4470729
    Abstract: A suction pipe adjacent to a cotton gin is power moved along a straight beam when a swing pipe leg is moved at an angle from vertical by an operator. Two rollers are driven by a motor. The motor is controlled by an angle activated switch and two limit switches on the ends of the beam.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: September 11, 1984
    Assignee: Anderson & Bigham Sheet Metal Works, Inc.
    Inventors: John C. Fredenburg, Charlie F. Hunter