Granted Patent
Utility
US 5,456,249 · App. 08/177,438
Resuscitator with carbon dioxide detector
Inventor:
Gilbert M. Kirk
Patented Case
View Patent ↗
Granted: Oct 10, 1995
Filed: Jan 5, 1994
Inventor
Gilbert M. Kirk
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.