Granted Patent
Utility
US 4,499,992 · App. 06/486,251
Self-cleaning support roller for an endless conveyor belt
Inventors:
Bernard S. Paulson, Bruce H. Paulson, Brian K. Clark, Richard Briesemeister
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Apr 18, 1983
Inventors
Bernard S. Paulson
Bruce H. Paulson
Brian K. Clark
Richard Briesemeister
Assignee (at issue)
Pixall Limited Partnership
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.