Granted Patent
Utility
US 4,595,499 · App. 06/784,904
Gravity belt thickener and belt press combination
Inventors:
Richard Kormanik, Karen Dejewski, Robert Brummond
Patented Case
View Patent ↗
Granted: Jun 17, 1986
Filed: Oct 7, 1985
Inventors
Richard Kormanik
Karen Dejewski
Robert Brummond
Assignee (at issue)
Envirex, 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.