Granted Patent
Utility
US 6,203,764 · App. 09/232,286
Vacuum-insulated catalytic converter
Inventor:
David K. Benson
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Jan 15, 1999
Inventor
David K. Benson
Assignee (at issue)
Midwest Research Institute, 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.