Granted Patent
Utility
US 5,331,698 · App. 08/002,695
Mattress for birthing bed
Inventors:
David C. Newkirk, Sandy M. Richards, Richard L. Borders
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Jan 11, 1993
Inventors
David C. Newkirk
Sandy M. Richards
Richard L. Borders
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.