Granted Patent
Utility
US 5,992,571 · App. 08/774,818
Mast assembly for forklift trucks
Inventor:
Seung Ho Lee
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Dec 27, 1996
Inventor
Seung Ho Lee
Assignee (at issue)
Daewoo Heavy Industries 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.