Granted Patent
Utility
US 5,475,888 · App. 08/381,085
Lip lifting mechanism for a dock leveler
Inventor:
Douglas H. Massey
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Jan 31, 1995
Inventor
Douglas H. Massey
Assignee (at issue)
Kelley Company, 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.