Granted Patent
Utility
US 5,243,992 · App. 07/502,028
Pulse rate sensor system
Inventors:
Joseph S. Eckerle, Dale W. Ploeger, Steven Holmes, Thomas P. Low, Rudolf Elbrecht, Philip R. Jeuck, III, Ronald E. Pelrine, Victor T. Newton, Jr.
Patented Case
View Patent ↗
Granted: Sep 14, 1993
Filed: Mar 30, 1990
Inventors
Joseph S. Eckerle
Dale W. Ploeger
Steven Holmes
Thomas P. Low
Rudolf Elbrecht
Philip R. Jeuck, III
Ronald E. Pelrine
Victor T. Newton, Jr.
Assignee (at issue)
Colin Electronics Co., Ltd.
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.