Granted Patent
Utility
US 6,212,718 · App. 09/281,888
Air-over-foam mattress
Inventors:
James R. Stolpmann, Kenneth R. Smith, Roger D. Dalton, Gary W. Ferdon, Jonathan H. Mueller
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Mar 31, 1999
Inventors
James R. Stolpmann
Kenneth R. Smith
Roger D. Dalton
Gary W. Ferdon
Jonathan H. Mueller
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.