Granted Patent
Utility
US 5,309,921 · App. 07/833,762
Apparatus and method for respiratory monitoring
Inventors:
Roger A. Kisner, Steven P. Baker, R. Bennett Muskin
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Feb 11, 1992
Inventors
Roger A. Kisner
Steven P. Baker
R. Bennett Muskin
Assignee (at issue)
Spectrum Medical Technologies, 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.