Patents by Inventor Robert T. Lang

Robert T. Lang 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: D250609
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: December 19, 1978
    Inventors: Robert T. Lang, Geneva E. Lang