Granted Patent
Utility
US 6,480,773 · App. 09/635,343
Automatic boom soft setdown mechanism
Inventor:
Randall D. Hilgart
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Aug 9, 2000
Inventor
Randall D. Hilgart
Assignee (at issue)
Harnischfeger Industries, Inc.
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.