Granted Patent
Utility
US 5,450,966 · App. 08/263,524
Multi-stage disc screen for classifying material by size
Inventors:
Brian K. Clark, Roy R. Miller
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Jun 22, 1994
Inventors
Brian K. Clark
Roy R. Miller
Assignee (at issue)
Bulk Handling Systems
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.