Patents by Inventor Alfred B. Etherington

Alfred B. Etherington 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).

  • Helical composter
    Patent number: 4169878
    Abstract: The present invention provides a composter for the disposal of human and organic kitchen wastes through an aerobic process of decomposition wherein waste matter is moved down a helical or spiral path within a container.
    Type: Grant
    Filed: January 10, 1978
    Date of Patent: October 2, 1979
    Inventor: Alfred B. Etherington