Patents by Inventor Lawrence Keller

Lawrence Keller 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).

  • Patent number: D337975
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: August 3, 1993
    Inventors: Lawrence Keller, Radame Gutierrez