Granted Patent
Utility
US 5,447,165 · App. 08/211,227
Method for ascertaining prevailing lung condition and a device
Inventor:
Lars-Erik Gustafsson
Patented Case
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Granted: Sep 5, 1995
Filed: Mar 25, 1994
Inventor
Lars-Erik Gustafsson
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.