Granted Patent
Utility
US 6,691,986 · App. 10/273,285
Modular lift assembly
Inventor:
Donald A. Hoffend, Jr.
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Oct 17, 2002
Inventor
Donald A. Hoffend, Jr.
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.