Patents by Inventor Hans T. Thumm

Hans T. Thumm 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).

  • Waste material testing apparatus
    Patent number: 4184424
    Abstract: A waste material testing apparatus which is portable, economically manufactured, suitable for a wide variety of waste materials, sturdy enough to withstand the required compacting pressures, and equipped with a means to enable the viewing of the interior of the attendant container section to observe the compacting efficiency of the apparatus.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: January 22, 1980
    Assignee: Browning-Ferris Industries of Ohio and Michigan, Inc.
    Inventors: David M. Yeager, Hans T. Thumm