Granted Patent
Utility
US 5,797,549 · App. 08/659,277
Apparatus for separating plastics from paper fiber
Inventor:
Robert M. Williams
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Jun 6, 1996
Inventor
Robert M. Williams
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.