Granted Patent
Utility
US 5,388,535 · App. 08/151,326
Waste material flow control features in a material processing apparatus
Inventor:
Roger D. Eshleman
Patented Case
View Patent ↗
Granted: Feb 14, 1995
Filed: Nov 12, 1993
Inventor
Roger D. Eshleman
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.