Patents by Inventor Steven George Chapman

Steven George Chapman 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).

  • Rotary impeller
    Patent number: D468009
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: December 31, 2002
    Inventors: Lee P. Hoenderkamp, Steven George Chapman, Victor Aldrich