Granted Patent
Utility
US 5,343,043 · App. 08/120,069
Remote sensor device for monitoring motor vehicle exhaust systems with high speed sampling
Inventor:
James H. Johnson
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: Sep 13, 1993
Inventor
James H. Johnson
Assignees (at issue)
Envirotest Syst. Corp.
COLORADO SEMINARY
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.