Granted Patent
Utility
US 5,210,959 · App. 07/746,755
Ambient-free processing system
Inventors:
Dennis Brestovansky, Mark S. Nowotarski, Walter Plante
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: Aug 19, 1991
Inventors
Dennis Brestovansky
Mark S. Nowotarski
Walter Plante
Assignee (at issue)
Praxair Technology, 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.