Granted Patent
Utility
US 6,659,935 · App. 09/955,850
Lifting apparatus for patient support surface
Inventor:
Joseph Costanzo
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Sep 19, 2001
Inventor
Joseph Costanzo
Assignee (at issue)
HILL-ROM SERVICES, 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.