Granted Patent
Utility
US 6,723,989 · App. 09/704,565
Remote emissions sensing system and method with a composite beam of IR and UV radiation that is not split for detection
Inventors:
John DiDomenico, Craig S. Rendahl
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Nov 3, 2000
Inventors
John DiDomenico
Craig S. Rendahl
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.