Granted Patent
Utility
US 5,719,396 · App. 08/674,075
Systems and methods for determining compliance of moving vehicles with emission-concentration standards
Inventors:
Michael D. Jack, Troy P. Bahan, Jeffrey L. Hanson, David R. Nelson, Allen J. Paneral, Jay Peterson
Patented Case
View Patent ↗
Granted: Feb 17, 1998
Filed: Jul 1, 1996
Inventors
Michael D. Jack
Troy P. Bahan
Jeffrey L. Hanson
David R. Nelson
Allen J. Paneral
Jay Peterson
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.