Granted Patent
Utility
US 5,163,475 · App. 07/798,580
Gas delivery panels
Inventor:
Roger J. Gregoire
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Nov 26, 1991
Inventor
Roger J. Gregoire
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.