Granted Patent
Utility
US 5,207,185 · App. 07/858,840
Emissions reduction system for internal combustion engines
Inventors:
Leonard Greiner, David M. Moard
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Mar 27, 1992
Inventors
Leonard Greiner
David M. Moard
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.