Granted Patent
Utility
US 4,751,754 · App. 07/034,232
Dual hydraulic hospital bed with emergency bypass circuit
Inventors:
David W. Bailey, Michael J. Duwell, William H. Peck
Patented Case
View Patent ↗
Granted: Jun 21, 1988
Filed: Apr 2, 1987
Inventors
David W. Bailey
Michael J. Duwell
William H. Peck
Assignee (at issue)
HILL-ROM, 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.