Granted Patent
Utility
US 4,307,063 · App. 06/173,560
Fluid contacting apparatus
Inventor:
Dennis E. O'Brien
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Jul 30, 1980
Inventor
Dennis E. O'Brien
Assignee (at issue)
UOP LLC
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.