Granted Patent
Utility
US 5,438,986 · App. 08/166,761
Optical sensor
Inventors:
Daniel Disch, Christopher G. Chin, Josef K. S. Tan
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Dec 14, 1993
Inventors
Daniel Disch
Christopher G. Chin
Josef K. S. Tan
Assignee (at issue)
Criticare Systems, 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.