Patents by Inventor Keith A. Pfannenstiel

Keith A. Pfannenstiel 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).

  • Towed personnel transport
    Patent number: D378905
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: April 22, 1997
    Assignee: Chance Industries, Inc.
    Inventors: Michael L. Meister, Keith A. Pfannenstiel
  • Personnel transport vehicle
    Patent number: D388744
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: January 6, 1998
    Assignee: Chance Industries, Inc.
    Inventors: Keith A. Pfannenstiel, Michael L. Meister