Granted Patent
Utility
US 5,902,041 · App. 08/739,143
Defoaming mixing eductor
Inventors:
William G. Parsons, John M. Fritz
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Oct 28, 1996
Inventors
William G. Parsons
John M. Fritz
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.