Granted Patent
Utility
US 5,163,564 · App. 07/671,067
Disc screen with controlled interfacial openings
Inventor:
Conrad Matula
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Mar 18, 1991
Inventor
Conrad Matula
Assignee (at issue)
Beloit Technologies, Inc.
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.