Patents by Inventor Adrianus W. J. De Groot

Adrianus W. J. De Groot 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).

  • Mash-feed trough
    Patent number: 4895109
    Abstract: The mash feed through comprises a casing (2) of which the upper piece (12) encases a storage reservoir (11) and of which the bottom piece (49) accommodates a dish-shaped feed trough. The storage reservoir is closed off on its underside by a valve (18) provided to be actuated by an animal.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: January 23, 1990
    Inventors: Cornelis J. De Groot, Adrianus W. J. De Groot