Granted Patent
Utility
US 4,783,272 · App. 07/090,715
Removing solids from process separator vessels
Inventor:
John C. Patterson
Patented Case
View Patent ↗
Granted: Nov 8, 1988
Filed: Aug 28, 1987
Inventor
John C. Patterson
Assignee (at issue)
Atlantic Richfield 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.