Granted Patent
Utility
US 4,928,015 · App. 07/252,960
Measuring multicomponent constituency of gas emission flow
Inventors:
James W. Butler, Thomas Korniski, Alex D. Colvin
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Oct 3, 1988
Inventors
James W. Butler
Thomas Korniski
Alex D. Colvin
Assignee (at issue)
Ford Motor Company
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.