Granted Patent
Utility
US 5,020,178 · App. 07/423,245
Stabilizing pressure and flow conditions in a screening apparatus
Inventor:
Finn Jacobsen
Patented Case
View Patent ↗
Granted: Jun 4, 1991
Filed: Oct 18, 1989
Inventor
Finn Jacobsen
Assignee (at issue)
Kamyr AB
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.