Patents by Inventor John Andrews Holt

John Andrews Holt 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).

  • Convertible compact loader and excavator
    Patent number: 7147425
    Abstract: A loader excavator is described that is operable in an excavation mode or in a loader mode. The loader excavator comprises a main boom and a dipper boom, wherein a loader bucket or an excavator bucket can be selectively utilized in accordance with user preference.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: December 12, 2006
    Inventor: John Andrews Holt