Granted Patent
Utility
US 5,797,682 · App. 08/797,669
Device and method for measuring temperture of vehicle exhaust
Inventors:
John Kert, Robert D. Stephens, Michael D. Jack
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Jan 31, 1997
Inventors
John Kert
Robert D. Stephens
Michael D. Jack
Assignee (at issue)
Envirotest Systems Holdings Corp.
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.