Patents by Inventor Carl E. Engle

Carl E. Engle 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).

  • Honey pit fertilization system
    Patent number: 4326675
    Abstract: A fertilization system using the contents of the manure pits on farms to supply the fertilizer. The system comprising a pump for forcing the contents of the manure pits either directly through the irrigation piping system to the fields or for spraying the contents of the pits onto the fields. A unique pulverizer is used between the intake pipe set in the pits and the pump to assure that the contents of the pits do not clog the pump.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: April 27, 1982
    Assignee: Hydro AG-Tech, Inc.
    Inventors: Carl E. Engle, Donald Moldenhauer
  • Honey pit fertilization system
    Patent number: 4284246
    Abstract: A fertilization system using the contents of the manure pits on farms to supply the fertilizer. The system comprising a pump for forcing the contents of the manure pits either directly through the irrigation piping system to the fields or for spraying the contents of the pits onto the fields. A unique pulverizer is used between an intake pipe set in the pits and the pump to assure that the contents of the pits do not clog the pump.
    Type: Grant
    Filed: January 2, 1979
    Date of Patent: August 18, 1981
    Assignee: Hydro Ag-Tech Inc.
    Inventors: Carl E. Engle, Don Moldenhauer