Granted Patent
Utility
US 6,421,859 · App. 09/712,665
Patient support systems with layered fluid support mediums
Inventors:
Ronald B. Hicks, John H. Vrzalik
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Nov 13, 2000
Inventors
Ronald B. Hicks
John H. Vrzalik
Assignee (at issue)
KCI Licensing, 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.