Granted Patent
Utility
US 6,671,630 · App. 10/409,591
System and method for remote analysis of small engine vehicle emissions
Inventors:
Donald H. Stedman, Gary Bishop
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Apr 9, 2003
Inventors
Donald H. Stedman
Gary Bishop
Assignee (at issue)
Environmental Systems Products Holdings 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.