Granted Patent
Utility
US 4,332,285 · App. 06/157,769
Tractor power lift mechanisms
Inventor:
Harry Horsfall
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Jun 9, 1980
Inventor
Harry Horsfall
Assignee (at issue)
David Brown Tractors Ltd.
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.