Patents by Inventor Steven F. Retzloff

Steven F. Retzloff 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).

  • Multiple axle quarter frame end dump trailer
    Patent number: 5509724
    Abstract: A quarter frame end dump trailer has one or more resilient members placed in its drag link in order to permit the use of an air ride suspension in a tandem axle, spread axle or other multiple axle configuration.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: April 23, 1996
    Assignee: Travis Body & Trailer, Inc.
    Inventors: John W. Perry, Steven F. Retzloff, Jason R. Backs