Granted Patent
Utility
US 4,529,137 · App. 06/486,005
Multiple disk refiner for low consistency refining of mechanical pulp
Inventors:
John B. Matthew, David Robinson
Patented Case
View Patent ↗
Granted: Jul 16, 1985
Filed: Apr 18, 1983
Inventors
John B. Matthew
David Robinson
Assignee (at issue)
Beloit Corporation
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.