Granted Patent
Utility
US 5,256,289 · App. 07/787,814
Centrifugal separator incorporating structure to reduce abrasive wear
Inventors:
Dewey M. Cope, Harry E. Derton
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: Nov 4, 1991
Inventors
Dewey M. Cope
Harry E. Derton
Assignee (at issue)
CENTRIFUGAL AND MECHANICAL INDUSTRIES, 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.