Granted Patent
Utility
US 4,470,833 · App. 06/449,472
Roll filter metering arrangement
Inventor:
James C. Wolfe
Patented Case
View Patent ↗
Granted: Sep 11, 1984
Filed: Dec 13, 1982
Inventor
James C. Wolfe
Assignee (at issue)
Allis-Chalmers 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.