Granted Patent
Utility
US 5,019,761 · App. 07/313,958
Force feedback control for backhoe
Inventor:
Brett W. Kraft
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Feb 21, 1989
Inventor
Brett W. Kraft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.