Granted Patent
Utility
US 5,152,021 · App. 07/672,049
Low air loss bag for patient support system
Inventor:
John H. Vrzalik
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Mar 18, 1991
Inventor
John H. Vrzalik
Assignee (at issue)
Kinetic Concepts, 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.