Granted Patent
Utility
US 4,490,944 · App. 06/455,212
Pressure-compensated hydraulic positioning system
Inventor:
John P. Veale
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: Jan 3, 1983
Inventor
John P. Veale
Assignee (at issue)
Western Gear Machinery Co.
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.