Granted Patent
Utility
US 4,889,131 · App. 07/287,883
Portable belt monitor of physiological functions and sensors therefor
Inventors:
Robert J. Salem, George H. Holley
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Dec 20, 1988
Inventors
Robert J. Salem
George H. Holley
Assignee (at issue)
American Health Products, 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.