Granted Patent
Utility
US 4,787,322 · App. 07/161,003
Pellet feed system
Inventor:
Oliver J. Whitfield
Patented Case
View Patent ↗
Granted: Nov 29, 1988
Filed: Feb 26, 1988
Inventor
Oliver J. Whitfield
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.