Patents by Inventor Adrian R. Campbell-Kelly

Adrian R. Campbell-Kelly 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).

  • Feed supplement dispenser for piglets
    Patent number: D268056
    Type: Grant
    Filed: April 8, 1980
    Date of Patent: February 22, 1983
    Inventors: Adrian R. Campbell-Kelly, Hanne Fjelstad, Lasse Gravas, Erik Reinemo, Johan Sekkenes