Granted Patent
Utility
US 4,494,916 · App. 06/439,058
Hydrostatic steering unit with cylindrical slide member within cylindrical valve sleeve
Inventor:
Hollis N. White, Jr.
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Nov 4, 1982
Inventor
Hollis N. White, Jr.
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.