Granted Patent
Utility
US 4,899,053 · App. 07/111,621
Solid state non-dispersive IR analyzer using electrical current-modulated microsources
Inventors:
N. C. Joseph Lai, Edward J. Zuperku, Roy Henning
Patented Case
View Patent ↗
Granted: Feb 6, 1990
Filed: Oct 21, 1987
Inventors
N. C. Joseph Lai
Edward J. Zuperku
Roy Henning
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.