Granted Patent
Utility
US 4,979,723 · App. 07/415,941
Fluid powered wheel lift platform
Inventor:
Donald W. Wittersheim
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Sep 27, 1989
Inventor
Donald W. Wittersheim
Assignee (at issue)
Ford Motor Company
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.