Granted Patent
Utility
US 5,482,033 · App. 08/192,362
Anesthetic waste gas evacuation system
Inventors:
John R. Engle, Jeff Baker
Patented Case
View Patent ↗
Granted: Jan 9, 1996
Filed: Feb 8, 1994
Inventors
John R. Engle
Jeff Baker
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.