Granted Patent
Utility
US 4,397,628 · App. 06/344,581
Extrusion cylinder assembly
Inventors:
Albert A. Pinto, George Ryder
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: Feb 1, 1982
Inventors
Albert A. Pinto
George Ryder
Assignee (at issue)
Nabisco Brands, Inc.
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.