Granted Patent
Utility
US 4,449,537 · App. 06/355,961
Respiration monitor
Inventors:
Gerhard Pross, Frank Rochlitzer
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Mar 8, 1982
Inventors
Gerhard Pross
Frank Rochlitzer
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.