Patents by Inventor Robert E. Wagenfeld

Robert E. Wagenfeld 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).

  • System for reducing aircraft noise and hush kit
    Patent number: 4836469
    Abstract: A system is provided for existing three-engine jet aircraft to reduce the noise levels at take-off and landing in order to meet governmental noise regulations. The system is particularly suitable for 727-200 aircraft having three JT8D engines. A hush kit is formed of the modified components for installation in existing airplanes.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: June 6, 1989
    Assignee: Valsan Partners Limited Partnership
    Inventor: Robert E. Wagenfeld