Granted Patent
Utility
US 5,860,491 · App. 08/847,822
Hydraulic lift system and method for retrofitting
Inventor:
Robert H. Fletcher
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: Apr 28, 1997
Inventor
Robert H. Fletcher
Assignee (at issue)
Advantage Lift Systems, 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.